Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of astm a795 fire erw straight pipe 76~660mm sprinkler system steel tube in China. Welcome to buy discount astm a795 fire erw straight pipe 76~660mm sprinkler system steel tube made in China here from our factory. Quality products and low price are available.
Product introduction
Product Overview
Our 76–660mm ASTM A795 Fire-rated ERW straight pipes are professional-grade welded steel tubes specially manufactured for building fire protection and automatic sprinkler systems. Complying strictly with ASTM A795 international fire protection standards, this series of ERW straight tubes adopts high-frequency electric resistance welding technology, featuring uniform pipe body, high-pressure resistance, zero-leakage weld performance and excellent fire safety stability. It is the designated standard pipe for wet, dry, preaction and deluge fire sprinkler systems.
Made of premium Grade A/B low-carbon fire-resistant steel, the pipe delivers stable mechanical performance, excellent pressure bearing capacity and outstanding structural toughness, fully meeting long-term static pressure bearing and emergency water supply requirements of fire protection systems. The complete outer diameter range of 76mm to 660mm covers mainstream specifications for building fire main pipelines, branch sprinkler pipes and fire water delivery pipelines. Available with black finish, hot-dip galvanized coating and fire-resistant red painting treatment, these ASTM A795 fire pipes support customized grooving, threading and pipe end processing. With standard compliance and reliable safety performance, they are widely used in commercial buildings, industrial plants, warehouses and public facility fire protection engineering projects worldwide.
Production Process
ASTM A795 Fire-Grade Raw Material Selection: Adopt qualified Grade A/B fire protection dedicated steel coils that fully comply with ASTM A795 standard requirements, with stable chemical composition, low impurity content and excellent pressure resistance for fire system long-term safe operation.
Precision Coil Slitting: Steel strips are slit into uniform width with ultra-tight tolerance to ensure consistent wall thickness, balanced pressure bearing and uniform force distribution of fire pipeline tubes.
Multi-Pass Precision Cold Forming: Continuous multi-roll cold forming ensures perfect roundness, excellent straightness and smooth inner and outer walls, avoiding pipeline deformation and assembly deviation during fire system installation.
High-Standard ERW Welding: Optimized high-frequency resistance welding forms narrow heat-affected zones and high-integrity straight welds. Weld strength matches base metal completely, eliminating weld cracking and leakage risks under fire emergency pressure surge.
Full Weld Bead Trimming & Polishing: Internal and external welding beads are thoroughly removed and finely polished to form seamless smooth pipe walls, reducing water flow resistance and ensuring unobstructed emergency water delivery for sprinkler systems.
Online Sizing & Straightening Calibration: Professional precision sizing and straightening strictly control dimensional tolerance, meeting high-precision docking requirements of fire pipe fittings, grooved joints and flange connections.
100% Fire-Grade Pressure & NDT Testing: Each pipe undergoes eddy current non-destructive flaw detection and high-standard hydrostatic pressure test in accordance with ASTM A795 regulations to ensure zero defects and qualified fire safety performance.
Standard Fixed-Length Cutting: Support standard 6m/12m lengths and customized 1.5–18m fixed lengths, adapting to different building fire protection pipeline layout and construction standards.
Professional Fire-Grade Surface Treatment: Optional black anti-rust treatment, hot-dip galvanized coating and fire-resistant red painting to meet indoor, outdoor and hidden fire pipeline anti-corrosion and identification requirements.
Fire Safety Sampling Inspection: Conduct pressure resistance, tightness, tensile and flattening tests to verify full compliance with ASTM A795 fire protection pipeline acceptance standards.
Technical Specifications
Basic Parameters
Product Name: ASTM A795 Fire Protection ERW Straight Sprinkler Steel Pipe Welding Process: ERW High-Frequency Electric Resistance Straight Welded Executive Standard: ASTM A795 (Standard for Fire Protection Steel Pipe) Steel Grade: Grade A / Grade B optional Core Application: Building automatic sprinkler system, fire water supply pipeline, fire protection engineering Surface Options: Black uncoated, hot-dip galvanized, red fire-resistant painted
Dimension Range
Outer Diameter: 76mm – 660mm (full specifications for fire sprinkler main and branch pipelines) Wall Thickness: 2.0mm – 25.4mm, SCH10/SCH40 standard fire pipe thickness available Length: Standard 6m/12m random length; customizable fixed length 1.5m–18m Tolerance: ASTM A795 standard precision tolerance, fully compliant with international fire engineering installation norms
Mechanical & Fire Safety Performance
Minimum Yield Strength: 290MPa Minimum Tensile Strength: 400MPa Elongation: ≥21% Core Performance: Standard fire-grade hydrostatic pressure resistance, excellent airtightness and impact resistance, stable structural performance under emergency pressure fluctuation, fully meeting long-term standby and emergency fire water supply requirements
Product Advantages
Strict ASTM A795 Standard Compliance: Produced and inspected in full accordance with international fire protection standards, matching global fire engineering design codes, supporting project acceptance and certification in various countries.
Zero-Leakage Fire Safety Performance: High-integrity ERW welds and 100% hydrostatic testing ensure no pipeline leakage, avoiding failure risks of sprinkler systems during fire emergencies.
Stable Emergency Pressure Resistance: Excellent structural rigidity and pressure-bearing capacity resist instantaneous water pressure surge, ensuring stable and continuous water supply for fire sprinkler systems.
Smooth Low-Resistance Pipeline: Fully polished inner wall reduces water flow friction, improving sprinkler water delivery efficiency and ensuring rapid fire suppression response.
Diversified Fire Engineering Customization: Support professional fire pipe processing such as grooving, threading and chamfering, compatible with various fire pipe fittings and quick connection systems.
Durable Anti-Corrosion Protection: Optional galvanized and red fire paint treatment effectively resists indoor humidity and atmospheric corrosion, ensuring long-term standby safety of fire pipelines.
Complete Fire Specification Coverage: Full 76–660mm OD range covers all mainstream fire sprinkler pipeline specifications, realizing one-stop procurement for fire protection engineering projects.
Application Fields
Commercial building automatic fire sprinkler system pipelines
Industrial factory, warehouse and logistics park fire protection pipe networks
Mall, hotel, office building and public facility fire water supply systems
Wet, dry, preaction and deluge fire sprinkler supporting pipelines
Underground fire water delivery and building fire main pipeline engineering
High-rise building fire protection and emergency water supply pipeline projects
Fire protection engineering EPC projects and standardized fire system supporting pipes
Packaging & Delivery
All ASTM A795 fire protection steel pipes adopt standard export fire engineering packaging. Pipes are bundled with high-strength steel strips and fitted with rigid plastic end caps to protect pipe ends and keep inner walls clean and unobstructed. Special waterproof and dust-proof packaging is applied for long-distance sea transportation to avoid surface oxidation and contamination. Support FCL container loading and bulk vessel shipment, with customizable fire engineering exclusive shipping marks and batch packaging standards to meet global fire project procurement requirements.
Quality Assurance & Service
We implement full-process ISO quality management system for ASTM A795 fire-grade pipes. Complete Mill Test Certificates, ASTM A795 standard compliance reports, hydrostatic test records and NDT inspection certificates are provided for each batch. Third-party inspections such as SGS and BV are acceptable. We support long-term bulk supply and fire engineering customized processing, providing one-stop professional services including parameter confirmation, production tracking, fire standard inspection and full set of export clearance 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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