Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of pre-galvanized hfw pipe 76-660mm pre zinc coated straight welded tube in China. Welcome to buy discount pre-galvanized hfw pipe 76-660mm pre zinc coated straight welded tube made in China here from our factory. Quality products and low price are available.
Product introduction
Product Overview
Our 76–660mm pre-galvanized HFW straight welded pipes are high-quality anti-corrosion steel tubes processed with professional pre-zinc coated treatment. Manufactured by advanced high-frequency welding technology, these straight seam welded tubes feature uniform zinc coating, smooth surface, precise dimensional accuracy and stable welding integrity. Different from post-galvanized pipes, pre-galvanized treatment provides consistent coating adhesion, bright surface finish and excellent oxidation resistance, ensuring long-term anti-rust performance for indoor and outdoor general engineering.
Made of premium low-carbon steel, the HFW welded tube guarantees stable mechanical properties and solid weld structure. The full outer diameter range from 76mm to 660mm covers mainstream specifications for structural frames, water pipelines, mechanical supports and municipal engineering piping. Pre-galvanized layers effectively isolate air and moisture, providing reliable anti-corrosion protection under normal atmospheric environments. Factory direct bulk supply with standardized coating thickness and stable quality makes these tubes ideal for global distributors, construction contractors and mechanical engineering projects.
Production Process
Qualified Raw Material Selection: Adopt high-quality low-carbon steel coils with stable chemical composition and excellent weldability to ensure reliable tube body performance and uniform coating combination effect.
Precision Coil Slitting: Steel strips are slit into uniform width with tight tolerance to ensure consistent wall thickness, roundness and overall structural balance of finished pipes.
Continuous Cold Forming: Multi-pass rolling forming shapes steel strips into standard round tube blanks, ensuring smooth pipe surface and excellent straightness.
HFW High-Frequency Welding: High-frequency induction straight welding forms high-strength weld seams with narrow heat-affected zones. Weld strength matches base metal without cracks or defects.
Internal & External Weld Bead Trimming: Weld beads are fully trimmed and polished to ensure flat and smooth inner and outer walls, providing perfect conditions for uniform zinc coating adhesion.
Online Sizing & Straightening: Precision calibration controls dimensional tolerance and straightness to meet standard pipe precision requirements before galvanizing.
Pre-Galvanizing Treatment: Professional pre-zinc coating process forms uniform, dense and bright zinc layers on both inner and outer surfaces, with stable coating adhesion and no peeling.
Surface Finishing & Cooling: Post-galvanizing leveling and cooling treatment ensures smooth surface without zinc nodules, burrs or uneven coating.
Fixed-Length Cutting: Standard 6m/12m lengths and customized 1.5–18m fixed lengths are available to fit various project construction needs.
Strict Batch Inspection: Test coating thickness, adhesion, flatness, mechanical performance and weld tightness to ensure full compliance with pre-galvanized pipe standards.
Technical Specifications
Basic Parameters
Product Name: Pre-galvanized HFW Straight Welded Steel Pipe Welding Process: HFW High-Frequency Induction Straight Welded Surface Treatment: Pre-galvanized / Pre zinc coated Executive Standards: ASTM A53, ASTM A500, BS 1387, ISO 65 Application: Structural support, water pipeline, mechanical frame, municipal engineering
Dimension Range
Outer Diameter: 76mm – 660mm Wall Thickness: 2.0mm – 25.4mm, customized thickness available Length: Standard 6m/12m random length; customized fixed length 1.5m–18m Tolerance: Standard industrial precision tolerance for diameter, wall thickness and straightness
Coating & Mechanical Performance
Zinc Coating Thickness: Uniform pre-zinc layer, standard 40–85μm adjustable Coating Feature: Bright surface, strong adhesion, no peeling, no zinc spangle falling off Minimum Yield Strength: 290MPa Minimum Tensile Strength: 400MPa Elongation: ≥21% Excellent bending, flattening and cutting performance without coating cracking
Product Advantages
Uniform & Smooth Pre-Galvanized Surface: Professional pre-zinc coating process ensures consistent zinc thickness on inner and outer walls, bright and clean appearance without uneven coating, zinc tumors or dead spots.
Excellent Anti-Corrosion Performance: Dense zinc layer forms effective protective barrier against air oxidation, moisture and atmospheric corrosion, greatly extending outdoor service life.
Stable HFW Weld Quality: High-frequency welding technology and full inspection guarantee defect-free weld seams, ensuring overall structural stability and pressure tightness.
Good Secondary Processability: The pre-galvanized surface supports cutting, bending, drilling and threading without large-area coating peeling, convenient for on-site construction.
Cost-Effective Anti-Rust Solution: Compared with post-hot-dip galvanizing, pre-galvanized pipes have more stable surface finish, lower cost and shorter production cycle, suitable for mass engineering procurement.
Complete Size Coverage: Full OD 76–660mm specifications meet most structural and pipeline usage scenarios, realizing one-stop purchasing.
Long-Term Durability: Stable zinc adhesion and oxidation resistance effectively reduce later maintenance and rust treatment costs for construction and pipeline projects.
Application Fields
Building steel structure frames and outdoor supporting facilities
General municipal water supply and distribution pipeline systems
Mechanical equipment brackets, chassis and supporting structural tubes
Road guardrail, fence and municipal public facility structures
Agricultural irrigation and farmland water conservancy pipelines
Container frame, modular house and light steel structure projects
Steel product wholesale, secondary processing and general engineering piping
Packaging & Delivery
All pre-galvanized HFW pipes are bundled with high-strength steel strips. Plastic protective end caps are installed to protect pipe ends and prevent surface scratch and oxidation during transportation. Standard waterproof packaging is adopted for long-distance sea shipment. Support FCL container loading and bulk vessel transportation. Custom shipping marks, bundle weight and export standard packaging are available according to customer requirements.
Quality Assurance & Service
We implement full ISO quality management system for pre-galvanized pipe production. Complete Mill Test Certificates, coating thickness test reports and NDT inspection records are provided for each batch. Third-party inspections such as SGS and BV are acceptable. We support small trial orders and long-term bulk supply, providing one-stop 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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