| Payment Type: | L/C,D/P,T/T |
| Incoterm: | CFR,EXW,CIF,FOB |
| Transportation: | Ocean,Land,Express |
| Port: | Tianjin,Shanghai,Qingdao |
Model No.: JIS G3458
Standard: Jis
Material: Stpg42, Stpa22-Stpa26, Stba20-Stba26, Stb35-Stb42, St35-St52, Cr-Mo Alloy, Crni Alloy, Mn-V Alloy
Section Shape: Round
Place Of Origin: China
Application: Fluid Pipe, Boiler Pipe, Hydraulic Pipe, Structure Pipe
Production Process: Hot Rolled
Certification: Api, Ce
Special Tube: Api Pipe, Thick Wall Pipe
Whether Alloy: Is Alloy
Tolerance: ±1%
Category: Seamless Steel Pipe
Processing Service: Punching, Decoiling, Bending, Cutting
| Selling Units | : | Ton |
| Package Type | : | Standard marine packaging, or as required by the customer |
| Picture Example | : |
|
The file is encrypted. Please fill in the following information to continue accessing it
JIS G3458 standard is made for heat resistant alloy steel pipes that are used for high temperature conveying fluid pipes for heaters and boiler tubes.
JIS G3458 alloy steel pipes are commonly used in industries where high-temperature and high-pressure conditions are present, such as power plants, refineries, and petrochemical plants.
The pipes specified in JIS G3458 are made of various grades of alloy steel. Some common grades include STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, and STPA 26.
| Grade | C | Si | Mn | P | S | Cr | Mo |
| STPA 12 | 0.10~0.20 | 0.10~0.50 | 0.30~0.80 | 0.035 max. | 0.035 max. | - | 0.45~0.65 |
| STPA 20 | 0.10~0.20 | 0.10~0.50 | 0.30~0.60 | 0.035 max. | 0.035 max. | 0.50~0.80 | 0.45~0.65 |
| STPA 22 | 0.15max. | 0.50 max. | 0.30~0.60 | 0.035 max. | 0.035 max. | 0.80~1.25 | 0.45~0.65 |
| STPA 23 | 0.15max. | 0.50~1.00 | 0.30~0.60 | 0.030 max. | 0.030 max. | 1.00~1.50 | 0.45~0.65 |
| STPA 24 | 0.15max. | 0.50 max. | 0.30~0.60 | 0.030 max. | 0.030 max. | 1.90~2.60 | 0.87~1.13 |
| STPA 25 | 0.15max. | 0.50 max. | 0.30~0.60 | 0.030 max. | 0.030 max. | 4.00~6.00 | 0.45~0.65 |
| STPA 26 | 0.15max. | 0.25~1.00 | 0.30~0.60 | 0.030 max. | 0.030 max. | 8.00~10.00 | 0.90~1.10 |
The mechanical properties of the alloy steel pipes depend on the specific grade. These properties include tensile strength, yield strength, elongation, and hardness.
| Grade | Tensile strength | Yield point or proof stress | Elongation % | |||
| kgf/mm2 {N/mm2} | kgf/mm2 {N/mm2} | No. 11 or No.12 test piece | No. 5 test piece | No.4 test piece | ||
| Longitudinal | Transverse | Longitudinal | Transverse | |||
| STPA 12 | 39{382}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 20 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 22 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 23 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 24 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 25 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
| STPA 26 | 42{412}min. | 21{206} min. | 30 min. | 25 min. | 24 min. | 19 min. |
JIS G3458 Grade STPA 22 Tubes are low-cost Low Carbon Steel Tubes with max 015 % carbon content with combination of 030-060 % manganese easy to form and shape .
These pipes are manufactured as per JIS Specification and commercially referred as cs pipes or ms pipes.
Low Carbon Steel Pipes are not as hard as hig carbon steel pipes,Though carburizing can increase its surface hardness.
The tubes shall be manufactured by seamless process, electric resistance welding process, or butt welding process, and those of other grades shall be manufactured by seamless process or electric resistance welding process. The tube shall be as manufactured or as cold-finished condition, or they shall be subjected to appropriate heat treatment.
The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube. The tubes shall be free from defects detrimental to practical use.
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers requirements.
Painting: as requested.
CONTACT US
Copyright © 2024 Tianjin Youfa Steel Co., Ltd All rights reserved. Privacy Policy
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Contact Now