Quick answer: laboratory gas piping in China is supplied by three kinds of companies: integrated laboratory gas system manufacturers that design, fabricate and install complete piping systems; fluid component manufacturers that make the valves, fittings and regulators used in the piping; and tube producers that supply the stainless steel tubing itself. This 2026 shortlist includes ten Chinese companies across these groups: LGF Lab Gas Flow, Shanghai Chengwei Semiconductor Equipment, Shenzhen Wofly Technology, Shenzhen Jewellok Technology, Sailuoke Fluid Equipment (Hikelok), FITOK, Jipai Fluid Control Technology, ZRTUBE, Yuhong Group and WEGS Fluid Technology. The list is not a ranking. Buyers should choose by project scope, purity level, documentation and local support, and verify every supplier with drawings, test records and references.
Editorial disclosure: this guide is published by LGF Lab Gas Flow, which appears in the list. Company descriptions are based on information the companies publish about themselves and on public listings available at the time of writing. The order is for reading convenience and is not a performance or quality ranking. Buyers should confirm current capabilities, certifications and service coverage directly with each supplier. A related shortlist of distribution system manufacturers is available in top 10 lab gas distribution system manufacturers.
What does a laboratory gas piping manufacturer actually supply?
A laboratory gas piping manufacturer supplies one or more parts of the route that carries gas from the source to the instrument: tubing, fittings, valves, regulators, gas panels, manifolds and, in the case of integrated suppliers, the design, prefabrication, installation and testing of the complete pipeline. The term is used for very different businesses, from a tube mill that produces electropolished stainless steel tubes to an engineering company that delivers a turnkey central gas supply for a research building.
Understanding which type of company is being compared prevents mismatched quotations. A tube producer quotes meters of tube, a component maker quotes fittings and valves, and a system manufacturer quotes a project scope that includes engineering, assembly, installation and testing. The laboratory gas piping and fittings procurement guide explains how these parts fit into one specification.
| Supplier type | What it supplies | Best used when |
|---|---|---|
| Integrated system manufacturer | Design, gas panels, manifolds, piping, installation, testing | A complete lab or building gas system is needed |
| Fluid component manufacturer | Valves, fittings, regulators, filters | An engineering team or installer designs the system |
| Tube producer | Stainless steel BA or EP tubing and pipe | Large tubing volumes for installers or integrators |
How were these ten Chinese companies selected?
The ten companies were selected because they publicly describe products or services relevant to laboratory or high-purity gas piping and have a manufacturing presence in China. The list deliberately includes different business models, because laboratory projects often combine an integrated supplier for system scope with component and tube suppliers for materials. Selection does not imply endorsement, certification or a claim that one company is best for every project.
Inclusion was based on publicly described product families, such as gas pipelines, gas cabinets, regulators, diaphragm valves, fittings and high-purity tubing. Several descriptions come from company websites, press releases or trade directory listings, which are self-reported. Buyers should therefore treat each profile as a starting point for supplier qualification rather than as verified performance data.
Ten laboratory gas piping manufacturers in China to compare in 2026
1. LGF Lab Gas Flow: integrated laboratory gas piping and equipment
LGF Lab Gas Flow is a Chinese manufacturer focused on laboratory gas supply, combining gas equipment manufacturing with piping design and project integration. Its range covers specialty gas cabinets, changeover manifolds, regulators, diaphragm valves, point-of-use panels, high-purity 316L tubing and fittings, exhaust treatment and complete laboratory gas pipeline installation for universities, research institutes, testing laboratories and manufacturing sites. Relevant products include ASTM 316L EP stainless steel tube for UHP gas and 316L BA stainless steel tube for high-purity gas.
LGF is suited to buyers who want one supplier responsible for gas source equipment, distribution piping and point-of-use hardware, with design, testing and documentation. Services are described on the laboratory gas piping design and laboratory gas pipeline installation pages.
2. Shanghai Chengwei Semiconductor Equipment: high-purity gas and chemical distribution
Shanghai Chengwei Semiconductor Equipment, based in Songjiang District, Shanghai, describes itself as a manufacturer of ultra-high-purity gas and chemical distribution equipment. According to its published information, it supplies central laboratory gas supply systems, custom UHP laboratory gas pipeline systems built mainly from electropolished 316L stainless steel with orbital-welded joints, gas cabinets, valve manifold boxes and laboratory gas scrubbers, with assembly in a cleanroom facility.
The company is relevant for buyers whose laboratories or pilot lines use semiconductor-type specialty gases and require cleanroom-assembled gas distribution equipment. Buyers should review project references and test documentation for comparable laboratory scopes.
3. Shenzhen Wofly Technology: gas system engineering and components
Shenzhen Wofly Technology, established in 2011 and headquartered in Shenzhen, describes itself as a gas system solutions provider that combines engineering design, project construction, technical consulting and product manufacturing. Its published product range includes diaphragm valves, pressure regulators, instrument valves, VCR-type fittings, high-purity fittings, special gas equipment, automatic switching systems and gas manifolds, with an original focus on laboratory, semiconductor, photovoltaic and microelectronics applications.
Wofly is relevant for buyers who want a Chinese supplier offering both components and project construction. As with any integrated supplier, buyers should confirm installation coverage in their region, welding procedures and testing records.
4. Shenzhen Jewellok Technology: UHP fluid control and laboratory pipelines
Shenzhen Jewellok Technology describes itself as a manufacturer of ultra-high-purity fluid control equipment, including high-purity gas valves, regulators and diaphragm valves. In 2026 the company announced an integrated laboratory gas pipeline system and gas scrubber system, stating that the pipeline network uses double-vacuum-melted 316L stainless steel for high-purity service.
Jewellok is relevant for buyers looking for UHP control components or a combined pipeline and abatement scope from one supplier. Because several published details come from press releases, buyers should request material certificates, test reports and references before shortlisting.
5. Sailuoke Fluid Equipment (Hikelok): instrument valves and fittings
Sailuoke Fluid Equipment, which markets its products under the Hikelok brand, is a manufacturer based in Chengdu that was founded in 2011 and focuses on instrument valves, fittings and fluid system integration. Its published range includes twin-ferrule tube fittings, threaded pipe fittings, welded fittings, quick connectors, vacuum fittings and flange fittings, with 316 stainless steel as a standard material.
Hikelok is relevant for engineering teams and installers who design their own laboratory gas piping and need instrument-grade fittings and valves. Buyers should confirm the cleanliness level, surface finish and pressure rating required for high-purity gas service.
6. FITOK: valves, fittings and integrated fluid systems
FITOK is a fluid system component group founded in 1998, with factories in China and Germany; its Chinese manufacturing sites are reported in Wuhan, Shenzhen and Suzhou. Its published product range includes fittings, valves, manifolds, filters, hoses, quick-connects, pressure regulators, tubing and integrated systems.
FITOK is relevant for buyers who want a broad component range from one source for laboratory and instrumentation piping. As with all component suppliers, compatibility with the selected tube and the required cleaning standard for high-purity or oxygen service should be confirmed.
7. Jipai Fluid Control Technology (Jiangsu): high-purity tubing and fittings
Jipai Fluid Control Technology, based in Jiangsu, markets tubing and fluid control products under the Nai-Lok name. Its trade listings include seamless 316L stainless steel tubing described for gas laboratory and gas cabinet use, alongside fittings and valves for instrumentation.
Jipai is relevant for installers and integrators sourcing tubing and fittings for laboratory gas lines. Buyers should request mill certificates, internal surface roughness data and cleanliness documentation for each batch.
8. ZRTUBE: ultra-clean BA and EP stainless steel tubing
ZRTUBE is a Chinese stainless steel tube producer described in industry buying guides as specializing in ultra-clean bright annealed (BA) and electropolished (EP) tubes for high-purity gas and liquid pipeline systems. Such tubing forms the main body of high-purity laboratory gas lines.
ZRTUBE is relevant for buyers who need high-purity tubing in volume, typically integrators, contractors and distributors. Tubing should be specified by material grade, dimensions, surface roughness, cleaning and packaging, and accepted on the basis of certificates and incoming inspection.
9. Yuhong Group: stainless steel piping and fittings supply
Yuhong Group is a Chinese stainless steel piping supplier described in industry guides as having developed into a one-stop piping solutions provider, with pipes, tubes, fittings and related products for industrial projects.
Yuhong is relevant mainly for larger infrastructure scopes, such as bulk gas or utility lines in research campuses, where standard industrial stainless piping is acceptable. For high-purity laboratory gas lines, buyers should confirm that the specific products meet the required surface finish and cleanliness.
10. WEGS Fluid Technology (Shanghai): gas distribution piping
WEGS Fluid Technology, based in Shanghai, is listed in trade directories as a supplier of stainless steel gas pipes and components for gas distribution networks.
WEGS is relevant for buyers looking for additional sources of stainless gas distribution piping in the Shanghai region. Because public information is limited, buyers should request a company profile, product specifications, references and test documentation before including the company in a tender.
How do the ten companies compare by buying scenario?
The ten companies serve different buying scenarios, and comparing them by scenario is more useful than ranking them. The table below summarizes where each type of supplier usually fits.
| Buying scenario | Relevant suppliers in this list | What to verify |
|---|---|---|
| Complete laboratory gas system, design to commissioning | LGF, Chengwei, Wofly, Jewellok | Project references, installation coverage, test records |
| Semiconductor-type specialty gases in labs or pilot lines | Chengwei, Jewellok, LGF, Wofly | Cleanroom assembly, UHP testing, gas cabinet compliance |
| Components for an in-house or contractor design | Hikelok, FITOK, Jipai, Wofly, Jewellok | Cleanliness, ratings, compatibility with tubing |
| High-purity tubing in volume | ZRTUBE, Jipai, LGF | Mill certificates, roughness, cleaning, packaging |
| Industrial or utility gas lines on a campus | Yuhong, WEGS | Specification fit for the gas and purity |
Which technical requirements should a Chinese piping supplier meet?
A Chinese laboratory gas piping supplier should meet the same technical requirements as any other supplier: correct materials, suitable surface finish, cleanliness, qualified joining methods and documented testing. For high-purity gases, the usual baseline is 316L stainless steel tubing with bright annealed or electropolished internal surfaces, specified internal roughness, cleaning and capping for gas service, and orbital welding or face-seal connections. Oxygen service requires cleaning for oxygen and compatible materials.
| Requirement | Typical evidence to request |
|---|---|
| Material grade and traceability | Mill certificates (for example EN 10204 3.1), heat numbers |
| Surface finish | Internal roughness data for BA or EP tubing |
| Cleanliness | Cleaning procedure, packaging, oxygen cleaning where required |
| Joining | Welding procedure specifications and welder qualifications |
| Testing | Pressure test, helium leak test, purity and particle test reports |
| Code compliance | Design basis for local codes, such as NFPA 55 or equivalent |
Code requirements for gas hardware are summarized in NFPA compliance for laboratory gas hardware.
How should buyers compare quotations from Chinese piping manufacturers?
Buyers should compare quotations from Chinese piping manufacturers on the same scope, materials and testing basis, because price differences often come from different assumptions rather than different efficiency. A tube price per meter, a component price list and a turnkey installation price cannot be compared directly. The quotation should state tube grade and finish, fitting and valve types, number of joints and welds, prefabrication, installation, testing, documentation, packaging, shipping terms and on-site support.
Hidden differences often appear in testing and documentation. A quotation that excludes helium leak testing, purity certification or as-built drawings may look cheaper but transfers work and risk to the buyer. A structured comparison sheet with identical line items for each supplier makes the real differences visible.
What should a laboratory gas piping RFQ to a Chinese supplier include?
A laboratory gas piping RFQ to a Chinese supplier should include enough information to quote the same scope without assumptions:
- Gas list with purity, pressure, flow and hazard class for each gas
- Floor plans with gas source location, routes and points of use
- Tube material, finish and size requirements
- Required components: regulators, valves, manifolds, cabinets, panels
- Joining method: orbital welding, face-seal or compression fittings
- Testing: pressure, helium leak, purity and particle requirements
- Applicable codes and approvals in the destination country
- Scope split: supply only, supervision or full installation
- Documentation: drawings, certificates, test reports, manuals
- Delivery terms, packaging and target schedule
Selection of the complete gas system is explained in how to select laboratory gas delivery systems.
What are the advantages and risks of sourcing laboratory gas piping from China?
The main advantages of sourcing laboratory gas piping from China are a large manufacturing base for stainless tubing, fittings and gas equipment, competitive pricing, the ability to prefabricate panels and manifolds to project drawings, and suppliers that can provide both equipment and engineering. Many Chinese suppliers also offer customization of panel layouts, labeling and documentation for export projects.
The main risks are inconsistent quality between suppliers, documentation that does not match the destination country’s requirements, communication gaps across time zones and limited on-site support abroad. These risks are managed by qualifying suppliers with samples and test records, defining technical requirements clearly, using third-party inspection where needed and agreeing on installation supervision or local partners. Factory capabilities can be reviewed on pages such as factory strength and manufacturing capacity.
How can buyers reduce a long list to three finalists?
Buyers can reduce a long list to three finalists by applying four filters in order. First, scope fit: remove suppliers that do not offer the required scope, such as installation or specific components. Second, technical evidence: remove suppliers that cannot provide material certificates, welding qualifications and test reports. Third, references: keep suppliers with comparable laboratory projects. Fourth, support: keep suppliers that can provide installation, supervision or responsive remote support in the project’s location.
The three finalists should then be compared on a detailed technical clarification, a sample or factory audit, and a full scope quotation. Choosing the lowest price only after these steps protects the project from hidden gaps.
Where are laboratory gas piping suppliers concentrated in China?
Laboratory gas piping suppliers in China are concentrated in a few industrial regions that also host semiconductor, electronics and research clusters. The Yangtze River Delta, including Shanghai, Jiangsu and Zhejiang, has many stainless tube producers, fluid component makers and gas system integrators serving fabs, universities and pharmaceutical laboratories. The Pearl River Delta around Shenzhen has a dense base of valve, regulator, fitting and gas equipment manufacturers linked to the electronics industry. Inland centers such as Chengdu and Wuhan host additional component manufacturers and growing semiconductor and research projects.
Regional concentration matters for buyers because it affects lead time, the ease of combining several suppliers in one shipment, and the possibility of visiting several factories in one trip. Buyers planning factory audits can group suppliers by region, and integrators often source tubing and components from nearby specialists to shorten prefabrication schedules.
How should overseas buyers manage logistics and installation?
Overseas buyers should manage logistics and installation by agreeing early on packaging, shipping, documentation and the installation model. High-purity tubing and prefabricated panels must be shipped capped, bagged and protected against bending and moisture, with clear labeling that matches the packing list and drawings. Long tubes need rigid crates, and gas panels need vibration protection. Shipping terms, insurance and import documentation should be defined in the contract.
For installation, buyers can choose supply only with local installation, supply with supervision by the manufacturer’s engineer, or full installation by the supplier’s team where permitted. Local welding codes, pressure equipment rules and electrical regulations may require local certified installers, so many projects use the Chinese supplier for prefabrication and supervision and a local contractor for site work. Clear interface definitions between the two avoid gaps in testing and responsibility.
Frequently asked questions
Is this list a ranking of the best laboratory gas piping manufacturers in China?
No. The list is a shortlist of companies with relevant products and services, presented in reading order. It is published by LGF Lab Gas Flow, which is included, and buyers should verify every supplier independently.
Can one Chinese supplier provide the complete laboratory gas piping system?
Integrated suppliers can provide design, equipment, piping, installation and testing, while component and tube producers supply only materials. Many projects combine an integrated supplier with separate material sources.
Which tubing is normally used for high-purity laboratory gas lines?
High-purity laboratory gas lines usually use 316L stainless steel tubing with bright annealed or electropolished internal surfaces, joined by orbital welding or face-seal fittings, cleaned and capped for gas service.
Do Chinese suppliers provide installation outside China?
Some suppliers provide installation teams, supervision or remote support for overseas projects, while others supply only equipment. The scope must be confirmed in the quotation.
What documents should be received with laboratory gas piping?
Typical documents include material certificates, welding records, pressure and helium leak test reports, purity test results, as-built drawings and operation and maintenance manuals.
Request a laboratory gas piping proposal from LGF
LGF Lab Gas Flow supplies complete laboratory gas piping systems, from high-purity tubing and fittings to gas cabinets, manifolds, regulators, point-of-use panels and exhaust treatment, with design, prefabrication, installation, testing and documentation for laboratories in China and abroad. Explore our centralized laboratory gas supply solution, our project cases and our core technology and qualifications.
Comparing laboratory gas piping suppliers for a new project? Send your gas list, floor plans, purity requirements and target schedule through the LGF contact page. Our engineers will prepare a scope-matched proposal with materials, testing and documentation clearly defined, so you can compare suppliers on equal terms. Laboratory designers, EPC contractors and distributors are welcome to contact us.
