Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of erw high frequency tube 76~660mm anti-rust oil coated welded pipe in China. Welcome to buy discount erw high frequency tube 76~660mm anti-rust oil coated welded pipe made in China here from our factory. Quality products and low price are available.
Product introduction
Product Overview
Our 76–660mm ERW high frequency welded steel pipes with anti-rust oil coating are cost-effective general-purpose welded tubes designed for versatile industrial and construction applications. Combining mature ERW resistance welding and optimized high-frequency welding technology, these steel tubes deliver stable weld integrity, precise dimensional accuracy and uniform pipe body structure.
Each finished pipe is professionally coated with a thin, uniform anti-rust oil layer on both inner and outer surfaces. This treatment effectively isolates air, moisture and dust, preventing oxidation and surface rust during storage, transportation and short-term outdoor service. Covering a complete outer diameter range of 76mm to 660mm, the product supports customized wall thickness and fixed lengths. Suitable for structural support, conventional fluid pipelines, mechanical matching and general engineering projects, these oil-coated welded pipes are ideal for bulk export procurement and stock sales for global distributors and contractors.
Production Process
Premium Raw Material Preparation: Adopt qualified low-carbon hot-rolled steel coils with stable chemical composition and excellent weldability, ensuring consistent mechanical performance of finished welded pipes.
Accurate Coil Slitting: Steel coils are slit into uniform strip width with precise tolerance, guaranteeing consistent wall thickness and symmetrical pipe structure.
Continuous Cold Roll Forming: Multi-pass rolling process shapes steel strips into standard round tube blanks, ensuring perfect roundness, straightness and smooth pipe surface.
ERW / High Frequency Welding: Adopt reliable electric resistance welding and high-frequency welding processes. The narrow heat-affected zone ensures solid, crack-free welds with strength matching the base metal.
Weld Bead Trimming & Polishing: Internal and external welding beads are fully removed and polished to eliminate stress concentration, ensuring smooth and flat tube walls.
Online Sizing & Straightening: Precision sizing and straightening strictly control all dimensional indicators within standard tolerance ranges, improving assembly accuracy.
Full Inspection Testing: All pipes undergo eddy current non-destructive flaw detection and hydrostatic pressure testing to eliminate welding defects and ensure overall structural safety.
Custom Length Cutting: Available in standard 6m/12m random lengths and customized fixed lengths from 1.5m to 18m to meet diverse project requirements.
Uniform Anti-rust Oil Coating: Professional oil-coating process evenly sprays protective anti-rust oil on inner and outer pipe surfaces, forming a tight protective film for anti-oxidation and moisture-proof protection.
Final Finishing & Packaging: Conduct surface inspection, remove residual impurities, and complete standardized export packaging to ensure intact delivery.
Technical Specifications
Basic Parameters
Product Name: ERW High Frequency Anti-rust Oil Coated Welded Steel Pipe Welding Process: ERW Electric Resistance Welding / High Frequency Welding Surface Treatment: Uniform anti-rust oil coating (inner & outer wall) Applicable Standards: ASTM A53, ASTM A500, BS 1387, ISO 65 Application: Construction structure, mechanical support, general water pipelines, engineering matching
Dimension Range
Outer Diameter: 76mm – 660mm Wall Thickness: 2.0mm – 25.4mm, customized SCH and special thickness available Standard Length: 6m, 12m random length Custom Length: 1.5m – 18m fixed cutting length Tolerance: Standard industrial tolerance for diameter, wall thickness and straightness
Mechanical Properties
Minimum Yield Strength: 240MPa–290MPa Minimum Tensile Strength: 370MPa–400MPa Elongation: ≥21% Excellent bending, flattening and impact resistance, no cracking or deformation during conventional construction and processing
Surface Protection Performance
The anti-rust oil layer features strong adhesion, uniform coverage and good waterproof and anti-oxidation performance. It can effectively prevent steel pipe surface rust and oxidation during long-distance sea transportation, warehouse storage and short-term outdoor placement, and is easy to clean and remove for subsequent secondary processing such as welding, painting and galvanizing.
Product Advantages
Effective Anti-rust Protection: Full inner and outer anti-rust oil coating isolates moisture and air, avoiding surface rust and oxidation during transportation and storage, greatly reducing product loss.
Reliable Welding Quality: Mature ERW and high-frequency welding technology with 100% NDT inspection ensures tight and stable welds, no leakage or structural defects.
Easy Secondary Processing: The thin oil coating is easy to clean and remove, posing no impact on subsequent welding, drilling, painting and hot-dip galvanizing processes.
Complete Size Coverage: Full OD range of 76–660mm covers most conventional welded pipe specifications, supporting one-stop bulk procurement for engineering and distribution customers.
High Cost Performance: Compared with galvanized pipes, oil-coated welded pipes have lower cost while meeting basic anti-rust needs, ideal for general engineering and turnover use.
Precision Dimensional Stability: Strict sizing and straightening control ensure high pipe body accuracy, convenient for on-site cutting, assembly and installation.
Wide Environmental Adaptability: Suitable for indoor storage, long-distance ocean transportation and short-term outdoor construction placement, adapting to various temperature and humidity environments.
Application Fields
General building steel structure support and frame engineering
Mechanical equipment base, bracket and matching structural pipes
Conventional municipal water delivery and drainage auxiliary pipelines
Agricultural irrigation and farmland water conservancy pipeline projects
Temporary construction support, scaffolding and engineering auxiliary pipes
Warehouse, logistics park and factory workshop steel structural facilities
Steel pipe bulk wholesale, stock sales and secondary processing projects
Packaging & Delivery
All anti-rust oil coated welded pipes are bundled with high-strength steel strips. Waterproof plastic end caps are installed at both ends to prevent dust, moisture and collision damage. The oil coating is kept intact during packaging. For long-distance sea shipment, additional waterproof wrapping is available to enhance moisture-proof and anti-rust effect. Support FCL container loading and bulk vessel transportation, with customizable export standard shipping marks and bundle specifications.
Quality Assurance & Service
We implement full ISO quality management system throughout production. Complete Mill Test Certificates, mechanical performance reports and NDT inspection records are provided for each batch of products. Third-party inspections such as SGS and BV are acceptable. We support small trial orders and long-term bulk customized supply, providing one-stop professional services including quotation, production tracking, quality inspection and full set of export documents.
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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