Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of hfw high frequency welded pipe 76-660mm bitumen coated anti-corrosion tube in China. Welcome to buy discount hfw high frequency welded pipe 76-660mm bitumen coated anti-corrosion tube made in China here from our factory. Quality products and low price are available.
Product introduction
Product Overview
HFW High Frequency Welded Pipe 76-660mm Bitumen Coated Anti-corrosion Tube is a cost-effective buried anti-corrosion steel pipe optimized for underground pipeline engineering. Adopting advanced HFW high-frequency welding technology, the pipe body features integrated forming, uniform weld structure and zero welding defects, with stable mechanical performance and high overall structural strength. The outer and inner walls are professionally coated with high-quality bitumen anti-corrosion layer, providing excellent waterproof, rust-proof and chemical corrosion resistance.
Covering a complete outer diameter range of 76mm to 660mm, this bitumen-coated HFW pipe fully meets the size demands of municipal water supply, sewage drainage, farmland irrigation, road buried pipelines and general underground fluid conveying projects. Compared with ordinary welded pipes, its bitumen protective layer effectively isolates soil moisture, acid-base substances and microbial erosion, solving the problem of rapid aging and leakage of buried pipelines. With reliable quality and ultra-high cost performance, it is the most widely used anti-corrosion welded tube for conventional buried engineering worldwide.
Core Product Specifications
Size Parameters
Outer Diameter (OD): 76mm – 660mm full standard size range
Wall Thickness (WT): 3.0mm – 30mm, supporting SCH20/SCH40/SCH80 standard schedules
Standard Length: 6m / 12m fixed length, 5.8–11.8m customizable random length
Pipe End Type: Plain end / Bevel end / Grooved end / Flanged end for flexible buried installation
Material & Executive Standards
This bitumen coated HFW anti-corrosion pipe adopts high-quality Q235B, Q345B carbon steel raw materials with stable chemical composition and good toughness. It complies with GB/T 3091, GB/T 9711, ASTM A53 and international pipeline manufacturing standards. The high-adhesion bitumen coating meets national buried pipeline anti-corrosion specifications, featuring strong weather resistance and stable protective performance in various soil environments.
HFW High-Frequency Welding Technology
The product adopts mature HFW high-frequency induction welding process, utilizing skin effect and proximity effect of high-frequency current to melt strip edges for one-time squeeze forming. The weld seam achieves metallurgical integration with the base metal, with dense internal structure, narrow heat-affected zone and no porosity or crack defects. After precise removal of internal and external weld flash and surface finishing, the pipe wall is smooth and flat, ensuring uniform adhesion of the bitumen coating and avoiding coating peeling and hollowing, which greatly improves the overall anti-corrosion durability.
Bitumen Anti-corrosion Coating Performance
1. Excellent Soil & Chemical Corrosion Resistance
The high-quality bitumen coating can effectively resist erosion from acidic, alkaline and saline-alkali soil, as well as microbial corrosion and groundwater chemical erosion. It completely isolates the steel pipe body from external corrosive media, preventing rusting, perforation and pipeline failure caused by long-term underground burial.
2. Super Waterproof & Sealing Performance
Bitumen material has natural waterproof and impermeable characteristics. The integrated coating forms a seamless protective film on the pipe surface, effectively blocking groundwater penetration. It avoids internal steel oxidation and ensures long-term dry and stable operation of buried pipelines.
3. Strong Coating Adhesion & Impact Resistance
Combined with professional pipe surface pretreatment process, the bitumen layer is tightly bonded to the steel surface without peeling or falling off. It can withstand slight extrusion and impact during soil backfilling and construction, maintaining complete anti-corrosion protection without damage.
4. Anti-Aging & Long Service Life
Bitumen coating has excellent anti-aging and anti-ultraviolet properties, adapting to long-term underground dark and humid working conditions. Under standard buried construction, the service life of bitumen-coated HFW pipes can reach 20-30 years, far longer than ordinary uncoated welded pipes.
5. Ultra-High Engineering Cost Performance
Compared with 3PE and epoxy heavy anti-corrosion processes, bitumen coating has lower cost while meeting conventional buried anti-corrosion demands. It is the most economical and practical anti-corrosion solution for large-scale municipal, water conservancy and civil buried pipeline projects.
Unique Advantages of HFW Bitumen Coated Pipe
Stable Weld Quality: HFW high-frequency welding ensures uniform weld strength, no leakage risk, suitable for long-term buried fluid conveying.
Full-Range Anti-corrosion: Inner and outer double bitumen coating achieves 360° all-round protection without dead corners.
Easy On-Site Construction: Light coating weight, strong adaptability, no strict construction environment requirements, suitable for various field laying conditions.
Low Maintenance Cost: Excellent environmental adaptability, no frequent maintenance and renovation required in later stage, saving project investment.
Production & Anti-corrosion Quality Control Process
Raw steel coil incoming inspection → CNC edge trimming → Multi-pass rolling forming → HFW high-frequency integrated welding → Weld flash removal & surface polishing → Online ultrasonic weld flaw detection → Pipe straightening & sizing → Fixed-length cutting → Pipe end finishing → Surface derusting & cleaning → Professional bitumen spraying & curing → Coating thickness & adhesion test → Hydrostatic tightness test → Final inspection & marking → Standard engineering packaging
All products implement full-process quality control. Weld non-destructive testing and bitumen coating performance testing are carried out one by one to ensure uniform coating thickness, strong adhesion and zero leakage, fully meeting buried pipeline engineering acceptance standards.
Wide Application Scenarios
Municipal underground buried water supply and sewage drainage pipeline projects
Farmland irrigation, water conservancy diversion and rural water supply buried pipelines
Road, bridge and municipal infrastructure buried auxiliary pipelines
Industrial park buried circulating water, wastewater and general fluid pipelines
Urban community, landscape and greening buried water delivery pipelines
Low-corrosion soil area long-term buried steel pipe engineering projects
Customization Options
Coating Customization: Single-layer / double-layer bitumen anti-corrosion coating, customized coating thickness
Size Customization: Non-standard diameter, special wall thickness, ultra-long fixed length processing
Pipe End Customization: Bevel, groove, flange and other special end treatments for project matching
Packaging & Delivery
Bitumen coated anti-corrosion HFW pipes are fitted with plastic protective caps at both ends to prevent coating damage and sundry entry. Small-diameter pipes are bundled with high-strength steel belts, and large-diameter pipes are fixed with wooden frames to avoid friction and extrusion damage during transportation. Adopt seaworthy and engineering-grade packaging, suitable for domestic project transportation and overseas export shipment. Complete factory test reports, anti-corrosion inspection certificates and export documents can be provided to support project acceptance and customs clearance.
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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