Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of 76-660mm hot rolled erw pipe gas transmission branch line tube in China. Welcome to buy discount 76-660mm hot rolled erw pipe gas transmission branch line tube made in China here from our factory. Quality products and low price are available.
Product introduction
1. Product Overview
76-660mm Hot Rolled ERW (High Frequency Electric Resistance Welded) Pipe is specially engineered as branch line tubing for onshore natural gas, LPG and city gas transmission networks. Manufactured from hot-rolled carbon steel coils via full continuous HF welding process without filler metal, this line pipe delivers precise dimensional tolerance, uniform weld microstructure and stable pressure bearing capacity, perfectly matching medium & low-pressure gas branch distribution projects, urban gas pipeline networks and industrial gas gathering branch lines.
Our ERW gas branch tube complies with API 5L PSL1/PSL2, ASTM A53, ISO 3183 and GB/T 9711 standards, with outer diameter covering full range 76mm to 660mm. All finished pipes pass strict hydrostatic test, ultrasonic weld inspection and flattening test to eliminate leakage risks for gas delivery service.
Core Application Scenarios
Urban natural gas distribution branch pipelines
Oil & gas field gathering branch transmission lines
Industrial factory LPG & fuel gas delivery mains
Municipal underground gas trunk branch network
Medium-low pressure gas secondary transmission piping
2. Production Process (Hot Rolled ERW Technology)
Hot rolled carbon steel coil uncoiling & surface leveling
Continuous strip edge trimming & straight forming into tubular blank
High-frequency resistance heating for strip edge fusion
Squeeze roller pressure welding, no welding wire required
Weld seam online normalizing heat treatment to remove martensite
Online ultrasonic NDT full weld inspection
Fixed-length cutting, pipe end facing & bevel processing
Hydrostatic pressure test, mechanical performance sampling test
Surface anti-corrosion coating / black anti-rust oil treatment
Bundling, marking & waterproof packaging for shipment
Technology Advantages for Gas Branch Line
Hot rolled coil raw material: compact grain structure, low C/S/P impurity, excellent toughness & anti-brittle failure performance under ground temperature fluctuation
HF ERW weld: uniform fusion, high weld strength equivalent to base metal, no hidden air gap for gas leakage
High forming precision: OD & wall thickness tolerance strictly controlled, easy field butt welding construction
Mass continuous production, short lead time, cost-effective vs seamless pipe for large-scale gas branch projects
3. Complete Technical Specification Table
|
Item |
Detailed Parameter |
|
Outer Diameter Range |
76mm – 660mm (NPS3 ~ NPS24) |
|
Wall Thickness |
2.5mm – 18mm (SCH40, SCH80, STD, XS customized) |
|
Standard Length |
5.8m, 6m, 11.8m, 12m; custom cut length available |
|
Applicable Standards |
API 5L PSL1 / PSL2, ASTM A53 Gr.A/B, ISO 3183, GB/T 9711, EN 10217 |
|
Steel Grades for Gas Service |
API 5L Gr.B, X42, X46, X52, X56, X60, X65; Q235B, S275JR, S355J2H |
|
Pipe End Options |
Plain square cut ends, beveled ends for site welding, threaded ends (small OD) |
|
Surface Treatment |
Bare black pipe with anti-rust oil; 3PE/3PP/FBE epoxy anti-corrosion coating for underground buried gas pipeline; black/red primer painting |
|
Max Working Pressure |
≤4.0MPa (medium-low pressure gas branch transmission) |
|
Tolerance Control |
OD tolerance ±0.75%, wall thickness ±10%, length ±50mm |
4. Key Performance Features for Gas Transmission Branch Line
Safe Anti-Leakage Weld Performance Full-length online ultrasonic weld inspection + 100% hydrostatic pressure test, each pipe holds rated pressure without weld crack or seepage; post-weld heat treatment eliminates hard brittle zone, prevents weld failure under cyclic gas pressure fluctuation.
Excellent Low-Temperature Impact Toughness Adopts low-impurity hot rolled coil raw material, meets PSL2 low-temperature impact requirements, suitable for cold northern regions underground gas pipelines without brittle fracture risk in winter.
High Dimensional Consistency Continuous roll forming ensures roundness & straightness, greatly improving field welding alignment efficiency, reducing construction cost for gas branch laying projects.
Custom Anti-Corrosion Solution for Buried Gas Line Optional 3PE, FBE fusion bonded epoxy external coating to resist soil acid, alkali and underground water corrosion, extending pipeline service life over 30 years for buried gas network.
Economical Large-Scale Supply Continuous ERW production line with high output, raw material utilization rate higher than seamless pipe, competitive unit price for bulk gas branch pipeline procurement, stable stock for urgent project delivery.
5. Strict Quality Inspection Items
All pipes undergo full-set third-party & factory lab tests before delivery:
Chemical composition analysis of hot rolled strip base metal
Tensile, yield strength & elongation mechanical test
Flattening test, bending test for weld ductility verification
Charpy V-notch impact test (low temp optional for PSL2 grade)
100% online ultrasonic weld non-destructive testing
Full pipe hydrostatic pressure leakage test
Visual surface defect inspection & dimensional tolerance measurement
Coating thickness & adhesion test (for anti-corrosion coated pipes)
Marking traceability inspection (standard grade, OD, WT, heat number, brand)
6. Packing & Shipping
Small OD pipes (76–219mm): Hexagonal steel strip bundles, both ends sealed with plastic protection caps, wrapped with waterproof kraft paper
Large OD pipes (273–660mm): Bulk loading in container / bulk vessel, separate plastic end plugs for each tube
Each bundle fixed with two metal tags marked with specification, standard, heat number, production batch
Support sea freight, land truck & railway container delivery for global gas project clients (Middle East, Southeast Asia, Central Asia gas pipeline projects)
7. Certifications
API Spec 5L Monogram License (PSL1 & PSL2 production qualification)
ISO 9001 Quality Management System
ISO 14001 Environmental Management
OHSAS 18001 Occupational Health Safety
CE PED Pressure Equipment Directive Certificate
Third-party factory inspection certificate (SGS, BV, TUV customizable)
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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