Thick Wall ERW HFW Welded Tube OD76-660mm Custom Wall Thickness

Product Description

Thick Wall ERW HFW Welded Tube OD76-660mm Custom Wall Thickness is heavy-duty high-frequency straight seam welded thick wall tube customized for high-pressure fluid transportation, heavy load structural support, oilfield high-pressure injection, machinery manufacturing and heavy engineering projects. Outer diameter covers full range of 76mm to 660mm, and we support fully customized wall thickness solutions beyond standard specifications, strictly produced in accordance with API Spec 5L, GB/T3091, ASTM A53, EN10217 international heavy-duty pipeline standards.

We adopt hot rolled thick steel coils as raw materials, available in Q235B, L245, X42, X52, X56M, S355JR high-strength low carbon steel grades. Adopting advanced HFW high-frequency solid-state induction welding technology, the weld forms complete metallurgical fusion with thick base metal, equipped with online internal & external flash removal and weld normalization stress relief heat treatment to eliminate concentrated residual stress of thick wall tubes. All finished thick wall tubes undergo 100% full-length hydrostatic high-pressure tightness test and full weld ultrasonic non-destructive inspection to avoid leakage risk under long-term high pressure. Multiple anti-corrosion treatments including 3PE, double FBE, internal epoxy lining and hot dip galvanized are optional, adapting to buried high-pressure oilfield, heavy industrial workshop, coastal corrosive and heavy load construction environments. With flexible custom wall thickness service, stable high bearing capacity and complete third-party inspection documents, this series thick wall HFW tube is the preferred customized heavy-duty pipe material for global high-pressure pipeline and heavy structural engineering buyers.

1. Basic Product Specifications

Product Name: Thick Wall ERW HFW Welded Tube OD76-660mm Custom Wall Thickness

Executive Standards: API Spec 5L, GB/T3091, ASTM A53 Type E, EN10217 Heavy Welded Tube Standard

Outer Diameter Range: 76mm ~ 660mm full heavy-duty tube mainstream calibers

Wall Thickness Mode: Standard wall + fully customized extra thick wall; customizable thickness range 6mm–30mm, support non-standard special wall thickness drawing customization

Steel Grades: Q235B, S355JR, ASTM A53 Gr.B, L245, X42, X52, X56M high-strength pipeline steel

Quality Grade: PSL1 / PSL2 optional for oilfield high-pressure projects

Production Process: Thick hot rolled coil slitting → heavy-duty multi-roll precision forming → HFW high-frequency ERW welding → internal & external burr removal → weld normalization heat treatment → heavy wall sizing & straightening → fixed-length cutting → full high-pressure inspection

Low-Temperature Performance: Customizable -20℃ / -40℃ Charpy V-notch impact test for cold region heavy-duty projects

Standard Length: 6m / 9m / 12m; custom fixed length within 12m supported

Applicable Working Media & Scenarios: Oilfield high-pressure water injection, crude oil high-pressure gathering, industrial high-pressure circulating water, heavy machinery chassis support, high-rise heavy load steel structure, mine auxiliary pressure pipeline

Design Working Pressure: Up to 6.4MPa for customized extra thick wall tubes

Pipe End Options: 30°~37.5° heavy beveled welding ends, plain flat ends, plastic anti-collision thick protective end caps

Anti-Corrosion Custom Options: Black anti-rust oil, hot dip galvanized, 3PE three-layer anti-corrosion, double-layer FBE coating, internal high-pressure resistant epoxy lining

Core Features: Full 76–660mm OD series, flexible custom thick wall thickness, high-strength thick steel substrate, HFW stress-relieved weld, high hydrostatic pressure resistance, full weld NDT inspection, multi-grade steel matching, customized anti-corrosion, factory custom processing for heavy engineering

2. Core Product Advantages

2.1 Fully Customized Wall Thickness, Meet Special Heavy-Duty Design Demands

Different from conventional standard thin/medium wall pipes, we support non-standard extra thick wall customization according to customer engineering drawings and pressure calculation parameters. Wall thickness can be freely adjusted from 6mm to 30mm, solving the matching difficulty of high-pressure pipeline and heavy load structure that standard wall thickness cannot meet. One-stop custom forming without secondary processing, greatly reducing customer on-site thickening, lining and modification costs.

2.2 Thick High-Strength Steel Substrate, Excellent High Pressure & Load Bearing Performance

Adopt thick hot rolled high-strength steel coil with dense uniform internal metallographic structure, low impurity content and stable tensile & yield strength. Extra thick wall design effectively improves pipeline anti-deformation, anti-extrusion and anti-burst capacity, resisting long-term underground soil extrusion, medium high-pressure impact and heavy static load, suitable for harsh working conditions with high safety factor requirements.

2.3 HFW Weld + Weld Normalization, Stable Weld Performance For Thick Wall Tube

Flux-free high-frequency concentrated heating welding adapts to thick plate edge fusion, narrow heat-affected zone without coarse grain embrittlement. Independent online normalization heat treatment eliminates huge welding residual stress easily generated by thick wall tubes, effectively preventing weld cracking under long-term alternating pressure and external extrusion. 100% full-length high-pressure hydrostatic test and full weld ultrasonic scanning completely eliminate hidden leakage risks of high-pressure thick wall pipelines.

2.4 Complete 76–660mm Outer Diameter Series, One-Stop Custom Matching

Covers all mainstream medium and large diameter thick wall tube specifications for heavy industry, oilfield and construction projects, fully compatible with API, ASTM, EN standard thick wall elbows, tees and high-pressure flanges. Customers can complete all caliber and custom wall thickness centralized procurement from single factory, simplify multi-supplier coordination and shorten project construction cycle.

2.5 Diversified Custom Anti-Corrosion Solutions For Harsh Heavy-Duty Environments

Hot dip galvanized thick coating: For overhead heavy machinery support and high-pressure workshop pipelines, long-term atmospheric anti-rust

3PE composite anti-corrosion: Conventional buried high-pressure oilfield pipelines, strong resistance to soil extrusion and electrochemical corrosion

Double layer FBE coating: Desert saline soil, coastal salt fog heavy pressure pipelines, superior acid and alkali corrosion resistance

Internal high-pressure epoxy lining: High-pressure injection water pipeline, prevent inner wall scaling and medium erosion, extend service life up to 45–50 years

2.6 Strict Full-Process Heavy-Duty Inspection, Complete Official Test Documents

All custom thick wall tubes adopt enhanced inspection standards: higher hydrostatic test pressure, extended pressure holding time, full coverage weld NDT sampling. We can provide complete MTR material report, weld inspection certificate, high-pressure test record and low-temperature impact test report. Support SGS, BV third-party on-site sampling inspection required by international heavy engineering and oilfield EPC projects.

3. Dimensional Tolerance Standard (API Spec 5L & GB/T3091 For Thick Wall Tube)

4. Mechanical & Chemical Properties (High Strength Thick Wall Tube Steel)

4.1 Mechanical Properties

4.2 Maximum Allowable Chemical Composition (Mass %, PSL2 Standard)

Note: All thick wall tubes pass 180° cold bending and reverse bend test without crack; customized extra thick wall products will increase impact test sampling ratio to guarantee safety under high pressure.

5. Complete Manufacturing Process For Custom Thick Wall HFW Tube

Thick Raw Material Inspection: Adopt API certified thick hot rolled steel coils, strictly test chemical composition, tensile strength and low-temperature toughness to meet heavy-duty thick wall tube standards.

Slitting & Heavy Edge Finishing: Precision slitting according to custom wall thickness matching width, grind thick strip edge oxide scale to ensure stable uniform welding gap for thick plate fusion.

Heavy-Duty Multi-Roll Continuous Forming: Reinforced forming roller group for thick strip rolling, guarantee uniform roundness and consistent custom wall thickness of tube blank.

HFW High-Frequency Induction Welding: Closed-loop automatic parameter adjustment for thick wall welding, concentrated edge heating to realize full penetration solid-state metallurgical weld without filler metal.

Internal & External Weld Burr Removal: Heavy-duty online mechanical scarving to completely clear thick welding flash for smooth inner wall, reduce high-pressure medium transmission resistance.

Weld Normalization Stress Relief Heat Treatment: Special enhanced heating process to eliminate massive residual stress of thick wall weld, improve weld anti-cracking performance under long-term high pressure and extrusion.

Thick Wall Sizing & Straightening: Reinforced sizing mill to control OD and wall thickness tolerance within tight range, straightener correct tube linearity.

Custom Fixed-Length Cutting: Heavy-duty cutting equipment for neat burr-free cutting according to customer drawing customized length.

Enhanced High-Pressure Inspection: 100% extended holding time hydrostatic tightness test, full weld ultrasonic non-destructive flaw detection, optional Charpy low-temperature impact sampling test.

Custom Anti-Corrosion Coating Processing: 3PE/FBE/internal epoxy/galvanized anti-corrosion construction as per project high-pressure and geological environment requirements.

Laser Permanent Marking: Mark standard, steel grade, custom wall thickness, OD×WT, PSL grade, batch number and anti-corrosion type on each tube.

Heavy-Duty Export Packaging: Thick wear-resistant PE film wrapping, reinforced steel strip bundling, thick plastic anti-collision end caps to prevent weld and anti-corrosion layer damage during long-distance transportation.

6. Main Application Scope Of Custom Thick Wall ERW Tube

Oilfield High-Pressure Pipeline: Oilfield high-pressure water injection trunk line, deep well crude oil high-pressure gathering pipeline, high-pressure associated gas delivery pipeline

Heavy Industrial Fluid System: Factory high-pressure circulating water, high-pressure process gas, chemical low-corrosion medium heavy pressure transmission pipeline

Heavy Construction Steel Structure: High-rise heavy load support pipe, bridge auxiliary heavy bearing pipe, large workshop main frame structural tube

Mechanical & Mining Equipment: Engineering machinery chassis thick support tube, mine underground high-pressure auxiliary pipeline, heavy equipment load-bearing bracket

Global Heavy-Duty EPC Projects: Overseas oilfield, heavy industry and high-pressure pipeline engineering requiring custom thick wall welded tubes

7. Quality Inspection & Factory Customization Certification

Fully compliant with API Spec 5L, GB/T3091, ASTM A53, EN10217 heavy thick wall welded tube international standards

ISO 9001 certified full heavy-duty HFW production line, independent custom thick wall processing workshop

Dual enhanced inspection system: thick wall tube high-pressure hydrostatic & full weld NDT inspection + finished anti-corrosion coating thickness and adhesion inspection

Complete set of heavy engineering official MTR test documents, weld inspection certificates and high-pressure test records supplied per shipment

Support SGS, BV third-party on-site sampling inspection required by international oil operators and heavy EPC contractors

Full batch traceability system covering thick steel coil raw material to finished custom thick wall tube delivery

8. Packaging & Bulk Custom Delivery Arrangement

Packaging: Black thick wall bare pipes coated with heavy anti-rust oil wrapped with thick wear-resistant PE film; 3PE/FBE anti-corrosion thick wall tubes with double-layer protective film to avoid coating scratch, bundled with high-strength thick steel strips, thick plastic anti-collision caps installed at both pipe ends.

Product Marking: Laser permanent marking including execution standard, steel grade, custom wall thickness, outer diameter × wall thickness, batch number and impact test index.

Trade Terms: FOB, CIF, CFR, DAP global sea and land bulk delivery, support inland truck transport to inland oilfield and heavy industrial zones

Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo, support full container centralized loading for large custom thick wall tube orders

Customization Service: Non-standard custom wall thickness per drawing, adjustable low-temperature impact index, multi-type high-pressure anti-corrosion coating, heavy beveled special pipe end processing

Delivery Cycle: Conventional stock medium thick wall specifications 7–12 working days; special extra thick wall + PSL2 + customized anti-corrosion tubes 15–22 working days

9. Why Choose Our Custom Thick Wall ERW HFW Tube Factory

Professional heavy-duty HFW production line, support full drawing-based custom wall thickness from 6mm to 30mm, solve non-standard high-pressure project matching problems

Complete 76–660mm outer diameter full series, one-stop custom supply for oilfield, heavy industry and heavy structural thick wall pipeline projects

Multiple high-strength steel grade options, enhanced weld normalization treatment to eliminate thick wall weld cracking hidden danger under high pressure

Enhanced high-pressure hydrostatic test and full weld NDT inspection, tight wall thickness tolerance to meet strict heavy engineering safety standards

Diversified high-pressure resistant anti-corrosion processes, adapt to desert, coastal, mine and various harsh high-pressure working environments

Factory direct custom processing without intermediate links, stable mass production capacity and competitive bulk price for long-term large heavy engineering cooperation

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