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The world's strongest ultra-deep water drilling platform—Blue Whale One

Chinese first state-owned deep-water gas field——Linshui17-2 gas field

The world's longest sea-crossing bridge——Hongkong-Zhu hai-Macao Bridge

The first deep well on land in Asia——Luntan Well One

The world's first R-55D type of self-elevating drilling platform

The most challenging drilling conditions' oilfield——Tarim field

The biggest earth pressure balance shield in the world

The world's biggest convention and exhibition center——Shenzhen international Convention and Exhibition Center

The world's highest coal machine hydraulic support

The world's best all-terrain crane——Jiuqiao all-terrain crane with biggest lifting capacity of 1E00 tons

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Non API OCTG,HS Premium Connection,Line Pipe

High-Precision Seamless Pipes for Hydraulic and Pneumatic Systems

Date:2025-03-08

Seamless steel pipes are essential in high-pressure hydraulic and pneumatic systems, where uniformity and precision are critical.

ID & OD Tolerances: Cold-drawn seamless (CDS) tubes achieve ±0.02 mm tolerance, ensuring leak-free performance.

Surface Roughness Control: Honed and skived roller-burnished pipes improve fluid dynamics and extend seal life in hydraulic cylinders.

High Yield Strength Steels: E355, ST52, and 4140 grades provide superior pressure resistance without excessive wall thickness.

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