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Gas Cylinder Tube JIS G3429

The JIS G3429 standard covers gas cylinder tubes made from high-quality carbon and alloy steels, including grades STM11, STH12, STH21, STH22, and STH31. These tubes are designed for high-pressure applications, ensuring safety and durability. Common uses include medical oxygen storage, industrial gases for welding, and chemical storage, making them essential across various industries.

Description

JIS G3429 STM11 STH12 STH21 STH22 STH31 Gas Cylinder Tube

Introduction

The JIS G3429 standard specifies the requirements for gas cylinder tube made from various steel grades. These tubes are essential for the safe storage and transportation of gases under high pressure. This article will cover the material specifications, key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades.

Material Specification

The gas cylinder tubes under JIS G3429 are manufactured from high-quality carbon steel and alloy steel, ensuring durability and safety under pressure.

Key Features

  • High Strength: Designed to withstand high pressure.
  • Corrosion Resistance: Suitable for various environments.
  • Weldability: Can be easily welded for fabrication.
  • Lightweight: Facilitates easier handling and transportation.

Chemical Composition

Steel Grade C (%) Si (%) Mn (%) P (%) S (%) Cr (%) Ni (%) Mo (%)
STM11 0.12 0.15 0.60 0.025 0.025 0.30 0.30 0.10
STH12 0.12 0.15 0.60 0.025 0.025 0.30 0.30 0.10
STH21 0.15 0.20 0.70 0.025 0.025 0.40 0.40 0.15
STH22 0.15 0.20 0.70 0.025 0.025 0.40 0.40 0.15
STH31 0.20 0.25 0.80 0.025 0.025 0.50 0.50 0.20

Mechanical Properties

Steel Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Hardness (HB)
STM11 245 400-510 20 120
STH12 245 400-510 20 120
STH21 295 490-590 18 130
STH22 295 490-590 18 130
STH31 345 540-640 16 140

Steel Grade

The JIS G3429 standard includes several steel grades, each designed for specific applications and pressure requirements. The main grades are STM11, STH12, STH21, STH22, and STH31.

Application

Gas cylinder tube are widely used in various industries, including:

  • Medical: For oxygen and other medical gases.
  • Industrial: For welding and cutting gases.
  • Chemical: For the storage of reactive gases.
  • Energy: For natural gas and other fuel gases.

Possible Alternative Grades

While the JIS G3429 grades are widely used, there are alternative grades that may be considered based on specific requirements:

  • ASTM A519: For seamless carbon and alloy steel mechanical tubing.
  • EN 10216: For seamless steel tubes for pressure purposes.
  • ISO 9809: For high-pressure gas cylinders.

Additional information

Application

High Pressure Gas Cylinders

Material

Alloy Steel, Carbon Steel

Steel Grade

STH11, STH12, STH21, STH22, STH31

Technique

Cold Drawn, Cold Rolled, Hot Rolled

Tolerance

±1%

Outer Diameter

25-426mm

Wall Thickness

0.5-100mm

Alloy Or Not

Is Alloy

Shape

Customer Requirements, Rectangular, Round, Square

OEM

Allow

MOQ

1 Ton

Sample

Allow

Processing Services

Bending, Customers's Requirement, Cutting, Decoiling, Moulding, Punching, Welding

Packing

Customer Requirements, Nylon Braided Tape, Wooden Box

Payment Method

D/A, D/P, L/C, MoneyGram, T/T, Western Union

Custom Made

LOGO, Package, Spray Label

Certification

API, BSI, CE, ISO14001, ISO9001, ROHS, TS16949

Secondary Or Not

Non-secondary

Company Profile

TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and

trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and

credibility among domestic and foreign customers.

The company’s production plant covers an area of over 10,000 square meters, with an annual production

capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which

can satisfy customers’ personalized needs for raw materials in terms of diversity and timeliness.

The group holds shares in more than ten domestic production entities, whose main products include

seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings

( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.),

aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC

deep processing of metal materials such as tubes, rods, and casting parts.

Over the past 30 years, the company has been gradually developing new technologies and materials to meet

the growing needs of customers and various diversified needs, exporting to more than 56 countries and still

increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and

to facilitate one-stop purchasing for customers

Certificate

Workshop Show

Testing equipment

Package