Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of api5l grade b erw hfw pipe 76~660mm line pipe supplier china in China. Welcome to buy discount api5l grade b erw hfw pipe 76~660mm line pipe supplier china made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
API5L Grade B ERW HFW Pipe 76~660mm Line Pipe Supplier China is standard petroleum transmission line pipe fully manufactured in accordance with API Spec 5L, produced via high-frequency resistance welding (HFW/ERW) technology, covering complete outer diameter range from 76mm to 660mm. The steel grade adopts API 5L Grade B carbon-manganese line pipe steel, available in PSL1 and PSL2 two product specification levels, specially designed for onshore crude oil gathering, natural gas transmission, water injection, produced sewage and refinery medium-low pressure pipeline projects.
We are a professional Chinese integrated HFW line pipe manufacturer with full independent production lines. The raw material adopts API certified hot rolled steel coil with strictly controlled low carbon, sulfur and phosphorus impurities. Adopting solid-state high-frequency induction welding, the weld achieves full metallurgical fusion with base metal, equipped with online internal & external flash removal and weld normalization stress relief heat treatment to eliminate welding residual stress. All finished pipes pass mandatory 100% full-length hydrostatic tightness test and full weld ultrasonic/eddy current non-destructive inspection, effectively avoiding pipeline leakage risk under long-term medium pressure. Multiple professional oilfield anti-corrosion schemes including 3PE three-layer polyethylene, double-layer FBE fusion bonded epoxy, internal liquid epoxy lining and black anti-rust oil are optional, adapting to desert saline soil, coastal salt fog, swamp and temperate inland geological environments. With stable batch quality, complete API official test documents and flexible customized processing service, our API 5L Grade B HFW line pipe is the reliable bulk supply partner for global oil & gas EPC contractors, oilfield operators and pipeline engineering purchasers.
## 1. Basic Product Specifications - \\Product Name\\: API5L Grade B ERW HFW Pipe 76~660mm Line Pipe Supplier China - \\Executive Standard\\: API Spec 5L (latest edition), GB/T 3091, EN10217 - \\Outer Diameter Range\\: 76mm ~ 660mm full standard line pipe calibers for oil & gas transmission - \\Wall Thickness Range\\: 2.75mm – 22mm; STD, XS, SCH40, SCH80 standard walls + custom thick wall drawing customization - \\Steel Grade\\: API 5L Grade B - \\Product Specification Level\\: PSL1 / PSL2 optional as per project design requirements - \\Production Process\\: API certified hot rolled coil slitting → multi-roll precision forming → HFW high-frequency ERW welding → internal & external burr removal → weld normalization heat treatment → sizing & straightening → fixed-length cutting → full API standard inspection - \\Low-Temperature Impact Performance\\: Customizable -20℃, -40℃ Charpy V-notch impact test for cold region oilfield projects - \\Standard Length\\: 6m / 9m / 12m; custom fixed length within 12m supported - \\Applicable Transmission Media\\: Crude oil, associated natural gas, injection water, production sewage, refinery low-corrosion process fluid - \\Design Working Pressure\\: ≤6.4MPa for conventional buried gathering & distribution pipelines - \\Pipe End Options\\: 30°~37.5° standard beveled welding ends, plain flat ends, thick plastic anti-collision protective end caps - \\Anti-Corrosion Custom Options\\: Black anti-rust oil, single/double layer FBE coating, 3PE composite anti-corrosion, internal anti-scaling epoxy lining - \\Core Features\\: Full 76–660mm OD series, API 5L Grade B certified petroleum line pipe, PSL1/PSL2 dual grade optional, HFW stress-relieved defect-free weld, 100% hydrostatic & full weld NDT inspection, professional oilfield anti-corrosion customization, Chinese factory direct bulk supply, complete API MTR documentation
## 2. Core Product Advantages ### 2.1 Strict API 5L Grade B Standard Compliance, Dual PSL1 & PSL2 Options Manufactured and inspected fully following API Spec 5L petroleum industry standards. PSL1 is cost-effective for general medium-low pressure gathering pipelines; PSL2 implements stricter control over chemical composition, yield-to-tensile ratio, dimensional tolerance and impact performance, meeting high-standard oilfield, refinery and long-distance trunk line project acceptance requirements. Uniform fine grain Grade B steel delivers balanced strength, weldability and low-temperature toughness, widely recognized by international oil companies.
2.2 Complete 76–660mm Outer Diameter Series, One-Stop Chinese Factory Centralized Sourcing
Covers all mainstream medium and large diameter line pipe specifications for oilfield gathering, water injection and gas distribution networks, fully compatible with API standard elbows, tees, flanges and pipe fittings. Global purchasers can complete all caliber centralized procurement from one Chinese manufacturer, simplify multi-supplier logistics coordination, cut overseas transportation and communication costs, and shorten project construction cycle for large oilfield development batches.
2.3 Advanced HFW Weld + Weld Normalization Treatment, Stable Weld Integrity For Oil & Gas Service
Flux-free high-frequency concentrated edge heating creates narrow heat-affected zone without coarse grain embrittlement. Independent online normalization heat treatment eliminates concentrated residual stress easily generated during thick wall welding, effectively preventing weld cracking under long-term underground soil extrusion and alternating medium pressure. 100% full-length hydrostatic pressure holding test and full weld ultrasonic scanning NDT completely eliminate crude oil and natural gas leakage hidden dangers, improving oilfield operation safety.
2.4 Smooth Inner Wall, Reduce Oilfield Transmission Energy Consumption
Online mechanical full removal of internal welding flash forms flat smooth inner surface, greatly lowering friction resistance of crude oil, water and gas medium. It restrains paraffin wax, mineral sediment adhesion and pipeline blockage frequently seen in oilfield gathering systems, reduces regular pigging cleaning frequency and long-term pumping compression energy consumption of oil and gas stations.
2.5 Graded Oilfield Anti-Corrosion Customization For All Complex Geology
Black anti-rust oil: For temporary overhead well site auxiliary pipelines, low cost for short-term construction period projects
3PE three-layer anti-corrosion: Conventional buried oilfield pipelines, strong resistance to soil mechanical scratch and electrochemical corrosion
Double-layer FBE coating: Desert high-salinity soil, coastal salt fog oilfields, superior acid and alkali medium corrosion resistance
Internal epoxy lining: Injection water pipelines, prevent inner wall scaling and medium erosion, extend pipeline service life up to 40–50 years
2.6 Chinese Factory Direct Wholesale, Full API Inspection Documents For Smooth Project Acceptance
Independent full HFW production line and dedicated API line pipe inspection workshop, no outsourcing processing links to realize full-chain quality control. We provide complete set of official API Mill Test Report, weld NDT inspection certificate, hydrostatic test record and low-temperature impact test report per shipment. Support SGS, BV third-party on-site sampling inspection required by international oil operators and EPC contractors, full batch raw material traceability system to pass global oil company supplier audits.
## 3. Dimensional Tolerance Standard (API Spec 5L) | Inspection Item | Standard Tolerance | | ---- | ---- | | Outer Diameter (76mm–168mm) | ±0.8% nominal OD | | Outer Diameter (168mm–660mm) | ±1.0% nominal OD | | Wall Thickness | +12% / −10% nominal thickness; tighter tolerance for PSL2 grade | | Pipe Straightness | ≤1.5mm per meter | | Out-of-Roundness | ≤1.0% of outer diameter | | Cutting Length | +100mm / −0mm |
## 4. Mechanical & Chemical Properties (API 5L Grade B) ### 4.1 Mechanical Properties | Steel Grade | Min. Yield Strength | Min. Tensile Strength | Max Y/T Ratio (PSL2) | Min. Elongation | Mandatory Factory Test | | ---- | ---- | ---- | ---- | ---- | ---- | | API 5L Grade B | 245MPa | 415MPa | 0.93 | Meet API elongation formula | 100% hydrostatic tightness test, full weld UT/ET NDT, flattening & reverse bend test, optional Charpy impact sampling |
4.2 Maximum Allowable Chemical Composition (Mass %, t ≤25mm)
|
Specification Level |
C Max |
Mn Max |
P Max |
S Max |
|
PSL1 |
0.26 |
1.20 |
0.030 |
0.030 |
|
PSL2 |
0.24 |
1.20 |
0.020 |
0.010 |
Note: All pipes pass 180° cold bending test without crack; formal signed low-temperature Charpy impact test report can be issued separately for cold northern oilfield projects.
## 5. Complete API Line Pipe Manufacturing Process 1. \\API Raw Material Inspection\\: Inspect chemical composition, tensile performance and low-temperature toughness of API certified Grade B hot rolled steel coils to meet PSL1/PSL2 standard requirements. 2. \\Slitting & Edge Levelling\\: Precision slitting to matched width, grind strip edge oxide scale to guarantee uniform stable welding gap for high-quality line pipe weld. 3. \\Multi-Roll Continuous Precision Forming\\: Gradual rolling molding to ensure uniform roundness and consistent wall thickness of pipe blank, comply with API dimensional tolerance limits. 4. \\HFW High-Frequency Induction Welding\\: Closed-loop automatic parameter control, concentrated edge heating to realize full penetration solid-state metallurgical weld without filler metal. 5. \\Internal & External Weld Burr Removal\\: Online mechanical scarving to clear welding flash for smooth inner pipe wall, reduce oilfield medium transmission resistance. 6. \\Weld Normalization Stress Relief Heat Treatment\\: Eliminate welding residual stress, improve weld low-temperature toughness and anti-cracking performance under underground complex soil stress. 7. \\Sizing & Straightening\\: Precision sizing mill calibrate outer diameter to API standard tolerance, straightener correct pipe linearity. 8. \\Fixed-Length Cutting\\: Neat burr-free cutting according to customer project customized length requirements. 9. \\Full API Standard Inspection\\: 100% hydrostatic tightness test, full weld ultrasonic non-destructive flaw detection, full dimensional reinspection, optional Charpy low-temperature impact sampling test. 10. \\Custom Anti-Corrosion Coating Processing\\: 3PE/FBE/internal epoxy anti-corrosion construction customized based on oilfield geological environment and design requirements. 11. \\API Standard Laser Marking\\: Mark API Spec 5L, Grade B, PSL level, OD×WT, batch number, impact test temperature and anti-corrosion type on each pipe body. 12. \\Export Oilfield Standard Packaging\\: Waterproof wear-resistant PE film wrapping, heavy-duty steel strip bundling, thick plastic anti-collision end caps to protect weld and anti-corrosion layer during long-distance sea and inland land transportation to oilfield construction sites.
## 6. Main Application Scope Of API 5L Grade B Line Pipe - Oilfield Crude Oil Gathering Network: Wellhead crude oil collection pipeline, intermediate oil transfer station auxiliary delivery trunk line - Natural Gas Distribution System: Associated gas gathering pipeline, low-pressure gas vent and recovery supporting pipeline, urban natural gas branch transmission line - Oilfield Water Injection Project: Underground buried water injection pipeline for oil reservoir pressure maintenance, water treatment station delivery pipeline - Refinery & Petrochemical Auxiliary Pipeline: Refinery circulating water, low-pressure process gas, chemical agent injection auxiliary pipeline - Global Onshore Oil & Gas EPC Projects: Overseas medium-low pressure oil, gas and water transmission pipeline construction projects complying with API Spec 5L international petroleum standards
## 7. Quality Inspection & Factory Qualification Certification - Fully compliant with API Spec 5L, GB/T3091, EN10217 oil & gas welded line pipe international standards - ISO 9001 quality management system certified full HFW production line, dedicated API line pipe independent production workshop - Dual independent inspection system: base pipe hydrostatic & full weld NDT inspection + finished anti-corrosion coating thickness and adhesion inspection - Complete set of API official Mill Test Report, weld inspection certificates and anti-corrosion test reports supplied per bulk shipment - Support SGS, BV third-party on-site sampling inspection required by international oil operators and global EPC contractors - Full batch traceability system covering steel coil raw material to finished API line pipe delivery
## 8. Packaging & Bulk Export Delivery Arrangement - \\Packaging\\: Bare black line pipes coated with anti-rust oil wrapped with thick waterproof PE film; 3PE/FBE anti-corrosion pipes with double-layer wear-resistant protective film to avoid coating scratch during transportation, bundled with high-strength steel strips, thick plastic anti-collision caps installed at both pipe ends. - \\Product Marking\\: Laser permanent marking including API Spec 5L standard, Grade B steel grade, PSL level, outer diameter × wall thickness, batch number and low-temperature impact index. - \\Trade Terms\\: FOB, CIF, CFR, DAP global sea and land bulk delivery, support inland truck transport to inland oilfield zones - \\Main Shipping Ports\\: Tianjin, Qingdao, Shanghai, Ningbo, support full container centralized loading for large oilfield project bulk orders - \\Customization Service\\: Custom fixed length, adjustable low-temperature impact index, multi-type oilfield anti-corrosion coating, standard beveled special pipe end processing - \\Delivery Cycle\\: Conventional stock API 5L Grade B specifications 7–12 working days; customized PSL2 + heavy anti-corrosion + low-temperature impact pipes 12–20 working days
## 9. Why Choose Our Chinese API 5L Grade B HFW Line Pipe Supplier 1. Professional Chinese API certified HFW line pipe manufacturer, independent production line supporting PSL1 and PSL2 two quality grades to match different oilfield design standards 2. Complete 76–660mm outer diameter full series, one-stop bulk supply for oilfield gathering, water injection and gas distribution all auxiliary pipeline specifications 3. Standard API 5L Grade B carbon-manganese steel with stable low-temperature toughness, weld normalization heat treatment eliminates weld cracking hidden danger under long-term underground pressure 4. Strict full-process API inspection system, 100% hydrostatic and full weld NDT testing to eliminate oil and gas pipeline leakage risk 5. Diversified professional oilfield anti-corrosion processes, adapt to desert, coastal, swamp and various harsh geological oilfield environments 6. Factory direct bulk wholesale without intermediate markup, sufficient spot inventory and stable mass delivery capacity for long-term large oilfield EPC project cooperative supply
## Contact Us For Chinese factory bulk wholesale quotations, detailed API 5L technical data sheets, low-temperature Charpy impact test reports, anti-corrosion coating inspection certificates, large oilfield order discounts and mass delivery schedules of \\API5L Grade B ERW HFW Pipe 76~660mm Line Pipe Supplier China\\, please contact our professional global petroleum energy sales team. As a reliable Chinese API line pipe manufacturer, we supply full OD range API 5L Grade B HFW welded line pipes and customized oilfield anti-corrosion solutions for global onshore oil & gas gathering, water injection and medium-pressure transmission pipeline bulk procurement projects.
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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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