Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of ASTM A53 Gr.B Seamless Steel Pipe Manufacturer | Factory-Direct High-Performance Carbon Steel Pipe in China. Welcome to consult the quotation and import cheap ASTM A53 Gr.B Seamless Steel Pipe Manufacturer | Factory-Direct High-Performance Carbon Steel Pipe made in China here from our factory.
Tianjin Tianyingtai Steel Pipe Co., Ltd. is a trusted ASTM A53 Gr.B seamless steel pipe manufacturer and supplier based in Tianjin, China. Our facility integrates production, warehousing, and export operations under one roof, with ready stock available for fast delivery. We supply a full range of outside diameters from 10 mm to 1020 mm and wall thicknesses from 2 mm to 80 mm. Customized processing, including beveling, threading, anti-corrosion coating, and cap packaging, is available upon request, along with original mill test certificates. Our pipes serve oil and gas, chemical processing, power generation, and structural engineering applications.
What Is ASTM A53 Gr.B? How Does It Compare with Chinese Steel Grades?
ASTM A53 is a U.S. standard carbon steel pipe specification. A53-B is the closest equivalent to China's 20# quality carbon structural steel in terms of mechanical properties and chemical composition. It offers good weldability, toughness, and cold working performance, with tensile strength ≥ 415 MPa and yield strength ≥ 240 MPa, making it suitable for low- and medium-pressure fluid transmission and general structural use.
Available Materials and Grade Selection
We supply A53-B, SS400, Q235B, 20#, and other carbon steel grades to match different engineering standards. SS400 is a general structural steel under JIS, with yield strength around 245 MPa and balanced plasticity, weldability, and machinability, widely used for structural pipes and support members.
20# steel is a quality low-carbon steel with good cold extrusion and carburizing performance, tensile strength 355–500 MPa and elongation ≥24%, suitable for pressure piping, machined parts, and heat exchanger components.
Q235 is a common carbon structural steel offering reliable overall performance and cost efficiency, often selected for building structures, fencing, scaffolding, and general conveying lines.
Key Applications
ASTM A53 Gr.B seamless steel pipes are widely used in oil and gas gathering and transmission lines, wellhead equipment, refining units, boiler and heat exchanger piping, high-pressure steam conveying, and corrosion-resistant piping systems in chemical equipment. In power generation, the grade can withstand long-term service at temperatures up to 400°C, with normalizing and other heat treatments further improving mechanical stability. In structural engineering, it is also used for offshore platform supports, heavy machinery hydraulic systems, construction brackets, automotive transmission parts, and exhaust pipes.
Quality Assurance and Export Services
Every production batch undergoes strict quality control, including spectrochemical analysis, mechanical property testing, bending and impact tests, radiographic inspection, and hydrostatic testing to ensure pipe integrity and pressure safety. The company holds ISO 9001 and API 5L certifications, and can deliver products in accordance with ASTM A106/A53, GB/T8162, GB/T8163, EN10210, and other standards. For export orders, we offer FOB, CIF, and CFR terms, accept T/T and L/C payment, provide prompt shipment for regular specifications, and typical lead time of 15–30 days for customized items.
Why Choose Tianyingtai?
Our advantages include factory-direct pricing, flexible multi-line production scheduling, and a professional foreign trade and quality control team. You can work directly with the source factory without intermediaries to obtain more competitive quotes and stable delivery cycles. Whether you need cut-to-length, threading, galvanizing, anti-corrosion coating, or special packaging, we provide one-stop service. Send us your specifications, quantity, and application conditions, and we will provide a precise quotation and technical recommendation within one business day.
Hot Tags: ASTM A53 Gr.B Seamless Steel Pipe Manufacturer | Factory-Direct High-Performance Carbon Steel Pipe, made in China, manufacturers, suppliers, API 5L LINE PIPE, RHS Tube, Q195 q235 Pre Galvanized Steel Pipe, Pre Galvanized Pipe, Q235 Steel Pipe, Galvanized Steel Round Pipe
