JIS G3429 STH11 Cold Drawn Hollow Seamless Steel Tubes For High Pressure Gas Cylinder

Introduction

JIS G3429 STH11 is a Japanese Industrial Standard (JIS) that specifies the requirements for cold drawn hollow seamless steel tubes used in high-pressure gas cylinders. These tubes are designed to provide superior strength and durability, making them suitable for critical applications in industries such as transportation, oil and gas, and energy.

Material and Specification

JIS G3429 STH11 tubes are manufactured using a specific composition and undergo a cold drawing process for enhanced precision and mechanical properties. The material is tailor-made to withstand high-pressure environments and ensure ety in gas cylinder applications. The tubes are available in various sizes and dimensions to cater to different requirements.

Key Features

The key features of JIS G3429 STH11 cold drawn hollow seamless steel tubes are as follows:

1. High pressure resistance: These tubes are capable of withstanding extreme pressure conditions, making them suitable for gas cylinders.
2. Seamless construction: The seamless manufacturing process ensures uniformity, smoothness, and dimensional accuracy, minimizing the risk of leaks and enhancing overall reliability.
3. Cold drawn precision: The cold drawing process imparts excellent dimensional accuracy and surface finish to the tubes, ensuring consistent quality standards.
4. High durability: The use of advanced steel materials and manufacturing techniques makes these tubes highly resistant to corrosion and external damage, leading to a longer service life.
5. Wide range of sizes: JIS G3429 STH11 tubes are available in a wide range of sizes and dimensions, providing flexibility in design and application.

Chemical Composition

The chemical composition of JIS G3429 STH11 cold drawn hollow seamless steel tubes is as follows:

Mechanical Properties

The mechanical properties of JIS G3429 STH11 cold drawn hollow seamless steel tubes are as follows:

Steel Grade

JIS G3429 STH11 denotes the steel grade for these cold drawn hollow seamless steel tubes. The grade ensures a specific chemical composition and mechanical properties suitable for high-pressure gas cylinder applications.

Application

JIS G3429 STH11 cold drawn hollow seamless steel tubes find extensive use in various high-pressure gas cylinder applications, such as:

• CNG (Compressed Natural Gas) cylinders used in automobiles and transportation.
• Industrial gas cylinders for the storage and transport of gases like oxygen, nitrogen, and argon.
• LPG (liquefied petroleum gas) cylinders used in household and commercial applications.

Possible Alternative Grades

While JIS G3429 STH11 is a widely used grade, there are some alternative grades available that offer similar characteristics. These include:

• ASTM A179/A179M: Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes.
• ASTM A519/A519M: Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing.
• DIN 2391-1: Seamless precision steel tubes, cold-drawn.

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