JIS G3455 STS 370 is a grade of carbon steel pipes specified under the Japanese Industrial Standard (JIS) G3455. The standard covers carbon steel pipes for high-pressure service at an approximate maximum temperature of 350°C.

STS 370 is a low to medium strength grade compared to STS 410, STS 480, and STS 510. It has a minimum tensile strength of 370 MPa and a minimum yield strength of 215 MPa. These carbon steel pipes can be produced using either a seamless or welded process, depending on the specific requirements of the application.

These carbon steel pipes are commonly used in industrial applications where high-pressure and high-temperature conditions are present, such as steam boilers, pipelines, and high-pressure equipment. They provide good mechanical properties to withstand such conditions, making them suitable for use in harsh environments.

In summary, JIS G3455 STS 370 is a low to medium strength grade of carbon steel pipes used for high-pressure service at high temperatures. The minimum tensile strength is 370 MPa and the minimum yield strength is 215 MPa. These carbon steel pipes are suitable for a variety of industrial applications where harsh conditions exist.

Heat treatment of JIS G3455 STS 370

Chemical Composition of JIS G3455 STS 370

Mechanical Properties of JIS G3455 STS 370

Appearance

(1)The pipe are practically straight, and its both ends shall be at a right angle to its axis.
(2) The inside and outside surfaces of the pipe shall be well-finished and free form defects that are detrimental to practical use.

Testings

(1)Chemical analysis
(2)Tensile Test
(3)Flattening Test
(4) Bending Test
(5) Hydrostatic Test or Nondestructive Examination

JIS G3455 Carbon Steel Pipes Dimensions Tolerance

Japanese Industrial Standards for steel

Japanese Industrial Standards (JIS) developed by the organization apply to a wide variety of industrial services and technologies such as automobiles, metallurgy, ships and medical equipment

The method for making cold-drawn seamless pipes involves taking a round “billet” or bar of steel and boring it in the center, turning it, cutting it, heating it to make it more pliable, then “drawing” it (extruding or pulling it) to make it a longer and thinner tube.

Japanese Industrial Standards specifies the standards used for industrial activities in Japan. The standardization process is coordinated by Japanese Industrial Standards Committee and published through Japanese Standards Association.

The Industrial Standardization Law was revised in 2004 and the JIS mark product certification system was changed. Standards are named like “JIS X 0208:1997″, where X denotes area division, followed by four digits (or five digits for some of the standards corresponding ISO standards) and the revision release year.

• G – Ferrous Materials and Metallurgy
• H – Nonferrous Materials and Metallurgy

MTC IN EN 10204.3

EN 10204:2004 is for metallic products-and this norm tell us things about Types of inspection documents. There are no material standards.

Mostly material is defined with its chemical composition and mechanical properties in a public standars like ISO, EN, JIS, ASTM etc.

What is JIS?

Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan. The standardization process is coordinated by Japanese Industrial Standards Committee and published through Japanese Standards Association.

Tolerance of JIS seamless pipe

Table 1: Tolerance on Outside Diameter in JIS G3441, G3444, G3445

Table 2: Tolerance on Wall Thickness in JIS G3441, G3444, G3445

Table 3: Tolerance on Outside Diameter and Wall Thickness in JIS G3454

Table 4: Tolerance on Outside Diameter and Wall Thickness in JIS G3455, G3456, G3458, G3460

Table 5: Tolerance on Outside Diameter in JIS G3461, G3462, G3464

Table 6: Tolerance on Wall Thickness in JIS G3461, G3462, G3464

Table 7: Tolerance on the Length in JIS G3461, G3462, G3464

Table 8: Tolerance on Outside Diameter in JIS G3465

JIS Number and Corrensponding Foreign Standards

In the Meiji era, private enterprises were responsible for making standards. However, the Japanese government did have standards and specification documents for procurement purposes for certain articles, such as munitions. These were summarized to form an official standard old JES in 1921. During World War II, simplified standards were established to increase matériel output. The Industrial Standardization Law was enacted in 1949, which forms the legal foundations for the present Japanese Industrial Standards.

Measurement size & Testing

• JIS seamless pipe testing covers many specifications, including alloy, size, toughness and composition.
• Those using steel products purchase the product that fulfills the requirements they need for what they are building.
• How To Measure Hardness Of Steel Pipe

Packing

• Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
• Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Delivery

• Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
• Weight of bundle – up to 5000 kg upon request of customer.
• Each bundle is furnished with three tags.

Seamless tube processing

With years of expertise, we provide a diverse array of steel tube processing options. From sawing and machining tube blanks to intricate bending and upsetting operations, we actively assist you throughout your projects.

Our capabilities extend to eccentricity reduction and concentricity enhancement through turning and grinding. We excel in creating complex geometries using processes like rotary swaging and axial forming. Additionally, we offer property modifications via partial heat treatment, ensuring tailored solutions for your specific needs.