Gas Pipe Manufacturers

Yuyao Shengchuang Pipe Industry Co., Ltd. is a Gas Pipe manufacturer based in Yuyao Jiangnan Plumbing City, Zhejiang, China. Since 2015 we have concentrated on safe gas pipeline products — stainless steel gas pipes, metal-coated pipes for gas service and stainless steel corrugated hoses — and we handle R&D, production, testing, warehousing and delivery inside our own plant.

Our 30,000 m² facility and team of more than 100 production, technical, quality inspection and warehouse staff supply gas enterprises, building material wholesalers, home decoration engineering contractors and hardware stores. The fixed-length range described here covers the final metre of a gas installation: the connection between the appliance and the fixed supply point.

Our Gas Pipe Range

The category is built around one national standard fixed-length family in 3/8" format, then divided by connection method. All variants share the same 304 stainless steel corrugated tube body, so what changes at the appliance port is the connector, not the pipe itself.

3/8" National Standard Fixed-Length Gas Hose

These fixed-length, seamless 304 stainless steel pipes for fluid connection are made from 06Cr19Ni10 stainless steel in a cold-formed periodic corrugated structure, combining structural rigidity with flexible deformability. The corrugation absorbs thermal expansion and contraction, which limits temperature-induced cracking at the joint. Production follows raw material inspection, corrugation forming, solution treatment, precision cutting, pickling and passivation, then final quality testing.

National Standard Fixed-Length Single-Plug Stainless Steel Gas Hose

A single-plug connection removes tooling from the appliance end, which suits plug-in style residential gas stoves and water heaters, small-scale commercial piping and gas renovation work. The tube body is precision one-piece formed and pressure tested before dispatch, and the exterior carries a weather-resistant layer for concealed kitchen and bathroom installation.

National Standard Fixed-Length Double-Threaded Stainless Steel Gas Hose

Threaded locking at both ends holds connection stability where lines vibrate or pressure fluctuates, and supports repeated disassembly and reinstallation during maintenance. We treat this variant as the broader-compatibility option for concealed installations, legacy piping upgrades and integrated gas piping projects.

Material and Construction of Our Stainless Steel Gas Pipes

We work in 06Cr19Ni10 (304) austenitic stainless steel, a general-purpose chromium-nickel grade with typically 18%–20% chromium and 8%–10.5% nickel. It offers corrosion resistance, formability, stability over a long service life and rodent-proof properties, which matters for concealed runs behind kitchen units and ducts.

• Austenitic strip is longitudinally sheared and argon-arc welded into tube, then solution treated and hydraulically corrugated.
• The periodic corrugated profile flexes with thermal movement instead of resisting it, reducing stress at the connection points.
• Finished hoses carry a weather-resistant exterior layer that resists corrosion and ageing in damp or concealed locations.
• Smooth internal bore limits deposit build-up and keeps the gas path clear over the life of the installation.

Application Fit Across Residential and Light Commercial Gas Systems

The range is compatible with household gas stoves, water heaters, wall-hung boilers and comparable gas appliances, and with the retrofit work around them.

• Appliance terminal connection — a single fixed-length hose from the wall valve to the appliance inlet.
• Gas renovation and retrofit — replacement of ageing rubber or corroded connections in occupied buildings.
• Concealed installation — coated hoses routed inside walls, ducts and cabinet voids where abrasion and moisture are present.
• Small commercial piping — light commercial kitchens, workshops and utility rooms fed from a fixed supply point.
• Corrugated pipe distribution — project-length stainless corrugated and metal-coated pipe for the fixed run behind the terminal hose.

Critical Specifications We Confirm Before Production

Each order is matched to the working point rather than to a generic catalogue size. The variables below are settled with your technical data before we release production.

• Nominal size and overall length of the fixed-length hose
• Connector type — single-plug or double-threaded — and the mating thread form on the appliance or valve
• Base material grade and whether a weather-resistant outer layer is required
• Gas medium, working pressure and the pressure class the line must hold
• Operating temperature range and expected thermal cycling of the installation
• Bend radius and routing path, including any tight turn at the appliance inlet
• Installation environment: exposed, concealed, humid, or subject to abrasion
• Packaging format, labelling, batch traceability needs and delivery schedule

Production Capacity, Stock and Order Handling

The welding workshop runs more than 40 high-precision automated welding machines plus an integrated intelligent assembly line, automating pipe forming, welding, wrapping and assembly. Automation keeps weld geometry consistent, which is what protects sealing, tensile strength and bending performance across a batch.

A large finished-goods storage centre holds regular specifications all year, with warehouse shipment reaching 10,000 pieces per day. Standard in-stock orders are arranged for dispatch within 48 hours, and our service team responds online 7×16 hours for urgent engineering orders so production capacity can be re-scheduled around a critical delivery date.

Quality Control and Acceptance Testing

We operate a closed-loop inspection system with a three-level mechanism: sampling on raw material intake, inspection during production, and full inspection of finished goods before release. Dedicated quality staff monitor each process step and complete records are kept per batch, so performance stays consistent between production runs.

• Tensile testing machines for welding strength
• Swing fatigue testing machines for bending life
• Air tightness testers for pressure sealing
• Corrosion resistance checks in our own standardisation laboratory
• 3C mandatory safety certification and ISO 9001 quality management system certification across the product line
• Domestic and international utility model and invention patents from our in-house R&D programme

Product safety standards follow domestic gas industry requirements and are set up to adapt to gas engineering acceptance in multiple regions. Certificates and batch test records are issued with the shipment so the receiving engineer can close out acceptance documentation.

Installation, Maintenance and Documentation

• Plug-in connections seat without special tooling, shortening fit-out time on residential terminals.
• Threaded connections tolerate repeated removal and refitting, which suits service and maintenance cycles.
• Corrugated bodies flex with thermal movement, so long straight runs need less compensation hardware.
• Replacement hoses, matching connectors and pipe lengths are supplied from the same fixed-length range to keep a building standardised over its service life.
• Documentation, batch records and packing lists travel with each order, and we support installation teams with selection information at the point of fit-out.

Information We Use to Configure Your Solution

A practical quotation for our gas pipe range comes from the working point, not from a size list alone. Send us the following and we will return a configuration with the connector, length, coating, packing and documentation set matched to the project.

• Appliance or terminal type and its inlet connection
• Supply point detail: wall valve, rigid pipe end or manifold outlet
• Required nominal size and finished length per line, with quantities
• Gas medium, working pressure and temperature conditions
• Installation type: exposed, concealed, ducted or moving installation
• Coating, labelling, private-label or packaging requirements
• Certification and acceptance documents required by the project
• Delivery split, destination and whether stock or production scheduling applies

Gas Pipe Questions We Answer Most Often

Which gas pipe sizes and lengths do you supply?

Our fixed-length range centres on the 3/8" national standard format, supplied in fixed lengths ready for appliance connection. Where a project needs a different length or a specific finished set, our R&D team adjusts specifications, lengths and connector styles to match the drawing.

Should a project specify single-plug or double-threaded hose?

The appliance port decides it. Plug-in stoves and water heaters take the single-plug version for fast installation, while lines that vibrate, fluctuate in pressure or are opened repeatedly for maintenance are better served by the double-threaded version with its threaded locking structure.

Which certifications apply to your gas pipe products?

The full product line has passed national 3C mandatory safety certification and ISO 9001 quality management system certification, and our R&D work has produced multiple domestic and international utility model and invention patents. Safety standards follow domestic gas industry requirements and are set up to meet gas engineering acceptance in multiple regions.

How is quality controlled before shipment?

Three inspection levels apply: sampling of incoming stainless strip, in-process inspection at each production stage, and full inspection of finished goods before they leave the plant. Tensile testing, swing fatigue testing and air tightness testing are carried out in our own laboratory, with batch records retained for traceability and acceptance.

What are your delivery capabilities for regular and urgent orders?

Regular specifications are held in stock throughout the year and the warehouse ships an average of 10,000 pieces per day, with standard in-stock orders arranged for dispatch within 48 hours. For urgent engineering orders and replenishment, our service team responds online 7×16 hours and can re-prioritise production scheduling.

Can you supply corrugated pipe and fittings with the hoses?

Yes. Alongside the fixed-length hose range we manufacture stainless steel corrugated pipe and gas metal-coated pipe, so a building's fixed distribution run and its terminal connections can be ordered as one package from a single production and warehousing base.