Import Astm A106/A53/Api 5l Seamless Carbon Steel Pipe — Buy in Bulk from Supplier in China

This seamless carbon steel pipe conforms to ASTM A106, ASTM A53 and API 5L standards, manufactured by Changsha Xianghui Entreprise Co., Ltd in Hunan Province, China. The seamless construction eliminates longitudinal weld seams, reducing stress concentration points and improving pressure containment integrity for oil and gas transmission lines, boiler tubes and structural supports. Available outer diameters and wall thicknesses vary by order specification, with mill test certificates available to confirm chemical composition and mechanical properties against the stated standard grades.

The material is plain carbon steel with controlled carbon, manganese and silicon content to achieve specified yield and tensile strengths. For ASTM A106 Grade B, typical composition limits include 0.30% maximum carbon, 0.29-1.06% manganese and 0.10% minimum silicon, with phosphorus and sulfur each capped at 0.035%. API 5L grades B through X70 span increasing strength levels through adjusted chemistry and thermomechanical processing. Typical wall thickness tolerance is minus 12.5% for seamless pipe per ASTM A530, with standard outside diameter tolerances ranging from plus or minus 0.40 mm to plus or minus 1% depending on nominal size and specification.

Buyers in petrochemical, power generation and infrastructure sectors source this product for steam lines, process piping, hydraulic systems and pipeline construction. The Hunan manufacturing base offers inland logistics connectivity via Changsha rail and road networks to Shanghai, Shenzhen and Guangzhou ports for FOB or CIF shipment. Buyers should confirm exact dimensional requirements, required grade designation and any supplementary NDE requirements with Changsha Xianghui Entreprise Co., Ltd before finalising procurement, as response and lead-time data are not available from the current listing.

Changsha Xianghui Entreprise Co., Ltd is located at 333 Wuyi Road, Changsha 410011, Hunan Province, China. The supplier holds an imported tier designation and a harbor trust tier on the platform. The response rate is recorded at 0.00% with zero average response hours, indicating no historical buyer engagement data is available through this channel. No verification of factory audit, export licence or quality management system certification is stated in the supplier profile.

The listing positions the company as a source of ASTM A106, A53 and API 5L seamless carbon steel pipe for oil and gas, construction and manufacturing sectors. The supplier profile does not state year of establishment, number of employees, annual turnover, production capacity, or named client references. Buyers should conduct independent due diligence on company registration, manufacturing scope and export credentials before placing orders, given the absence of response activity and verified status indicators.