JIS G3457 STPY 400 Steel Tube

JIS3457 STPY400 steel pipes are suitable for manufacturing arc-welded carbon steel pipes for low-pressure steam, gas, air, and other piping systems. JIS 3457 STPY400 welded pipes are typically produced by longitudinal seam welding or submerged arc spiral welding and generally do not undergo heat treatment. If you require heat treatment, please feel free to contact us. GNEE Group has 20 steel pipe production lines and can customize steel pipes for you, as well as provide special treatments. For further inquiries, please don't hesitate to contact us.

JIS G3457 STPY400 Welded Steel Pipes Specification

Standard	JIS G3457
Grade	STPY400/ STPY41
WT	SGP, SCH10, SCH20, SCH30, SCH40, SCH60, SCH80... customised
Length	6m, 6.1m, 12m or as customer's requirement
Type	SSAW, LSAW, ERW
Test	Chemical Component Analysis, Mechanical Properties (Ultimate Tensile Strength, Yield Strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Packing	Waterproof plastic bag,bundle with strip

JIS G3457 STPY400 Carbon Steel Pipe Chemical Composition

Symbol of class	Traditional symbol	C	P	S
STPY 400	STPY 41	0.25 max	0.040 max	0.040 max

JIS G3457 STPY 400 Welded Round Tube Mechanical Properties

Symbol of class	Tensile strength N/mm2	Yield point or proof stress N/mm2	Elongation %
			>5mm <6mm	>6mm <7mm	>7mm <8mm
STPY 400	400 min	225 min	15	16	18

JIS G3457 STPY 400 Welded Steel Tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Welded Steel Tubes Packaging and Shipping

1. Strapping: Plastic strapping or wire strapping can be used to bind the pipes, preventing them from scattering.
2. Plastic Bags: Pipes are often packaged in plastic bags, which can effectively protect the pipe surfaces from scratches or contamination.
3. Wooden Crates: Wooden crates can effectively bear the weight and prevent the pipes from being damaged during transportation.

 

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