Suppliers and Exporter of JIS G 3457
Check Here the different JIS G 3457 Stpy 400 and JIS G 3457 Stpy in India
Seamless Pipe
Welded Pipe
ERW Pipe
Hydrostatic haracteristic or Nondestructive Characteristic
The pipes shall be tested in accordance with 9.4 and the resulting hydrostatic characteristic or nondestructive characteristic shall conform to the following alternative, preference being committed either to the purchaser's designation or to the discretion of the suppliers.
- Hydrostic Characteristic When a hydrostatic pressure of 25 kgf/㎠ {25 bar} is applied, the pipes shall withstand it without leakage.
- Nondestructive Characteristic The pipes shall be subjected to the nondestructive examination in the form of the ultrasonic test, and there shall be no signal greater than those produced by the artificial defects of the reference test block grade UY of the working sensitivity division specified in JIS G 0584.
Dimensions, Mass and Dimensional Tolerances
- Dimensional Tolerances The tolerances on outside diameter and wall thickness of the pipes
- Dimensional and Mass The outside diameter, wall thickness and mass of the pipes shall be as specified in Attached Table
Wall Thickness
| Division of wall thickness | Over 7mm, up to 8mm | Over 6mm, up to and incl. 7mm | Over 5mm, up to and incl. 6mm |
| Elongation % | 18 | 16 | 15 |
Remarks
- In determining the outside diameter, either the measured value of the length of circumference or the diameter derived from the measured value may be used. In this case, the outside diameter (D) and the length of circumference (l) shall be calculated reversibly from the following formula.
- To the portions under repaired and the like, the above tolerances on outside diameter shall not be actually applied provided it is confirmed that the wall thickness is withness is within the tolerance range.
- Pipe Length The length of each pipe shall be 4000mm or over. l = ヰ · D where ヰ=3.1416
Grade and Designation
KS |
ASTM |
JIS |
DIN |
BS |
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| Grade Number |
GRADE | Grade Number |
GRADE | Grade Number | GRADE | Grade Number |
GRADE | Grade Number |
GRADE |
| D 3583 | SPW 400 (New) SPW 41 (Traditional) |
A 134 A 134 A 139 A 36 A 283 A 285 A 370 A 37 A 570 |
Gr B
Gr D Gr D |
G-3457 | STPY400 (New) STPY41 (Traditional) |
1626 | ust 37.0 st 37.0 st 44.0 st 52.0 |
3601 | SAW410 |
| A 139 | Gr A Gr C Gr D Gr E |
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Chemical Composition
| Letter symbol of grade | C | P | S |
| STPY400 | 0.25 max. | 0.40 max. | 0.040 max. |
Mechanical Properties
|
Letter symbol of grade |
Table 3 Mechanical Properties | ||
| Tensile strength 2 N/mm {kgf/mm2} |
Yield point or proof stress 2 2 N/mm {kgf/mm } |
Elongation % No. 5 test piece, transverse |
|
| STPY400 | 400 {41}min. | 255{23} min. | 18 min. |
Dimensions, Mass and Dimensional Tolerances
| Division | Tolerances % | |
| Outside diameter | 【0.5 Measurement based on the length of circumference. | |
| Wall thickness | Nominal diameter Up to and incl. 450A | +15 / -12.5 |
| Nominal diameter over 450A | +15 / -10 | |