Seamless Steel Pipes for Liquid Service

• ​Introduction

Seamless steel pipes for liquid service are critical industrial components designed to safely transport various liquids, such as water, oil, gas, and other fluid media, across different industries. Unlike welded pipes, they are formed from a single piece of metal without any longitudinal weld seams, offering superior structural integrity, pressure resistance, and leak-proof performance. These pipes are widely used in pipelines, heat exchangers, machinery, and infrastructure projects where reliability and durability are essential.

• ​Main Functions

Fluid Transportation：Safely convey liquid media under various pressures and temperatures, ensuring uninterrupted flow in industrial and civil applications.

Pressure Resistance:  Withstand high internal and external pressures, making them suitable for applications such as oil/gas pipelines and hydraulic systems.

• ​Tubing Standards

GB/T 8163 ; ASTM A53 ; ASTM A106 ; EN 10216-1 ; EN 10216-2

• ​Material & Performance

10#，20#，Q345，Q420

Gr.A/B；Gr.A/B/C

P195TR1；P235TR1，P265TR1 ；P195GH，P235GH，P265GH

Seamless steel pipes are formed by hot rolling or cold drawing, with no welds and uniform dense structure, capable of withstanding high liquid pressure (such as water pressure, oil pressure),ensuring the sealing and safety of liquids (especially flammable, explosive, or corrosive media) during transportation, and avoiding environmental pollution or safety accidents.，High-quality materials and processes ensure the durability of the pipes, reducing replacement frequency and maintenance costs，Easy to Machine and Connect.

• ​Manufacturing Process ​

Hot Rolling ​; Cold Rolling ​

Heat treatment: According to the performance requirements of the steel pipe, conduct heat treatment on the rolled steel pipe, such as normalizing, tempering, quenching, etc., to eliminate the residual stress inside the steel pipe and improve its strength, toughness, hardness, and other properties.

Surface treatment: Conduct surface treatment on the steel pipe, such as rust removal, painting, or galvanizing, etc., to prevent the steel pipe from being corroded during use and improve its corrosion resistance and service life.

Inspection: Conduct a comprehensive inspection on the finished steel pipe, including the inspection of dimensional accuracy, appearance quality, mechanical properties, chemical composition, etc., to ensure that the steel pipe meets the relevant standards and customer requirements.

• Specifications