JIS G3460 Stpl380 Steel Pipes for Low Temperature Service

• After-sales Service: Technical/Sample/Quality
• Type: Seamless/Welded
• Technique: Hot-Rolled/Cold-Drawn
• Material: Carbon/Alloy/Stainless
• Surface Treatment: Black&Varnish Coating&3lpe&PE
• Usage: Boiler Pipe
• Model NO.: STPL380
• Section Shape: Round
• Transport Package: as Required
• Specification: 10-850mm
• Trademark: SHUNFU
• Origin: China
• HS Code: 7304193000
• Production Capacity: 30000tons/Year

Product Description

JIS G3460 Steel pipes for low temperature service

JIS G3460 Steel pipes used for piping at extremely low temperatures of freezing point or under
 

JIS G3460 Steel pipes Manufacturing method

The manufacturing method shall be as follows.
The pipes shall be manufactured from fine-grained killed steels. Pipes of STPL380 shall be seamless or electric resistance welded, and those of STPL450 and STPL690 shall be seamless.
 

JIS G3460 Steel pipes dimensional and tolerances

Outside diameter: 10.5-660.4mm
wall thickness: sch 10-160
dimensional and tolerances: +/-1% OD ; +/- 1.6mm WT
 

JIS G3460 Steel pipes Chemical composition

Symbol of grade	C	Si	Mn	P	S	Ni
STPL380	0.25 max.	0.35 max.	1.35 max.	0.035 max.	0.035 max.	/
STPL450	0.18 max.	0.10 to 0.35	0.30 to 0.60	0.030 max.	0.030 max.	3.20 to 3.80
STPL690	0.13 max.	0.10 to 0.35	0.90 max.	0.030 max.	0.030 max.	8.50 to 9.50

 

JIS G3460 Steel pipes Mechanical properties

Symbol of grade	Tensile strength N/mm^2	Yield point or proof stress N/mm^2	Elongation %
			Tensile test piece and tensile test direction
			Test piece No. 11 or No. 12	Test piece No. 5	Test piece No. 4
			Parallel to pipe axis	Perpendicular to pipe axis	Parallel to pipe axis	Perpendicular to pipe axis
STPL380	380 min.	205 min.	35 min.	25 min.	30 min.	22 min.
STPL450	450 min.	245 min.	30 min.	20 min.	24 min.	16 min.
STPL690	690 min.	520 min.	21 min.	15 min.	16 min.	10 min.

 

JIS G3460 Steel pipes Heat treatment

STPL380/STPL450 Normalizing, normalizing followed by tem pering, or quenching followed by tempering
STPL690 Normalizing twice followed by tempering, or quenching followed by tempering
 

JIS G3460 Steel pipes Appearance

Appearance shall be as follows.
a) The pipes shall be straight, and the both ends shall be perpendicular to the pipe axis for practical purposes.
b) Both the internal and external surfaces of pipes shall be smoothly finished and free from defects detrimental to use.
c) Pipes may be repaired by grinding or machining, provided that the wall thickness of the product after repairing satisfies the specified tolerances. Repair by weldingis not permitted.
d) The surface of the repaired part shall be smooth along the contour of the pipe.
e) The external surface of the part where a weld bead was removed shall be smooth along the contour of the pipe.
 

JIS G3460 Steel pipes Tests and Inspection

Chemical analysis
Mechanical tests
Tensile test
Flattening test
Bend test
Charpy impact test
Hydrostatic test
Non-destructive test

Fushun Metal LTD CO

Fushun Metal is a large special steel manufacturer and supplier. We are metal experts and have been providing quality customer service and products since 1998.

At Fushun Metal, we supply a wide range of metals for a variety of applications. Our products/stock includes: cold rolled steel tube, cold drawn steel tube, hollow bar, boiler tube, alloy steel tube, stainless steel tube, nickel alloy pipe,etc

We also can supply move services like heat-treatment(QT, +A, +N, +SR, +BKS), grounded, polished, cutting, beveled, painted, threaded, upsetting, boring, honing etc.
 
Send your inquiry information to us and get a free quotation today!