JIS G3456 STPT 480 is a grade of seamless carbon steel pipes specified under the Japanese Industrial Standard (JIS) G3456. These pipes are designed for use in high-temperature service at an approximate maximum temperature of 350°C.

STPT 480 is a higher strength grade compared to STPT 370 and STPT 410, with a minimum tensile strength of 480 MPa and a minimum yield strength of 315 MPa. These pipes can be produced using either a seamless or welded process, depending on the specific requirements of the application.

JIS G3456 STPT 480 seamless carbon steel pipes are commonly used in high-temperature applications such as steam pipelines, boilers, and pressure vessels. They provide excellent mechanical properties to withstand such conditions, making them suitable for heavy-duty industrial applications.

In summary, JIS G3456 STPT 480 seamless carbon steel pipes are a grade of carbon steel pipes used for high-temperature service. The minimum tensile strength is 480 MPa and the minimum yield strength is 315 MPa. These pipes are commonly used in steam pipelines, boilers, and pressure vessels.

Heat treatment of JIS G3456 STPT 480

Chemical Composition of JIS G3456 STPT 480

Mechanical Properties of JIS G3456 STPT 480

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

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.

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Other Range of JIS standards for steel pipes

JIS seamless pipe according to alloy, stainless steel or carbon. It tests steel’s properties, hardness, resistance to corrosion, pitting, heat treating processes and others. The results are listed in a main JIS steel grade for steel pipe as below.