JIS G3466 STKR400 Carbon Steel Square Pipes

 

JIS G3466 STKR400 square pipes are Japanese standard ordinary carbon steel electric resistance welded square pipes used for building and installation engineering conduit.

JIS G3466 STKR400 Square Pipes Specification

Place of Origin:	Henan,CHINA
Brand Name:	GNEE
Certification:	ISO9001; SGS
Model Number:	JIS G3466
Minimum Order Quantity:	5 tons
Price:	negotiable
Packaging Details:	packing in wooden boxes or in hexagonal bundles
Delivery Time:	30-35 days
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	60000 Ton per year

STKR400 Hollow Section Chemical Composition:

Designation of grade	Chemical Composition
	C	Si	Mn	P	S
STKR 400	0.25 max.	-	-	0.040 max.	0.040 max.

STKR400 Carbon Structural Steel Tube Mechanical Property:

Designation of grade
	Tensile strength N/㎟{kgf/㎟}	Yield point or proof stress N/㎟{kgf/㎟}	Elongation % (No.5 test piece)
STKR 400	400 {41} min.	245 {25} min.	23 min.

JIS G3466 STKR400 Square Tube

Quality Acceptance Requirements for JIS G3466 STKR400 Square Pipes

• Visual Quality Acceptance

1. The outer surface of JIS G3466 STKR400 square pipes should be flat, without visible cracks or defects, and should appear clean and smooth.
2. Surface oxidation or rust on JIS G3466 STKR400 square pipes should be cleaned or replaced as necessary.
3. Visual inspection using naked eye or magnifying glass to check for wrinkles, local flattening, cracks, longitudinal pits, burn-through, or other quality defects on the pipe wall and pipe ends.
4. Inspection for external defects: External damage should not exceed 10% of the wall thickness.

• Dimensional Deviation Acceptance

1. Dimensional deviations of JIS G3466 STKR400 square pipes generally should not exceed the ranges specified in national standards, including tolerances for inner and outer diameters, wall thickness, etc.
2. There is no specific length requirement for JIS G3466 STKR400 square pipes; typical delivery lengths range from 6000 to 12000 mm.
3. Inspection of geometric dimensions to ensure compliance with standard specifications, such as outer diameter, wall thickness, length, etc. Deviations beyond national standard limits should prompt timely replacement or repair.

• Chemical Composition Acceptance

1. The chemical composition of JIS G3466 STKR400 square pipes should adhere to the specifications listed in the manufacturer's certification of compliance.
2. Acceptance is based on chemical analysis methods, typically measuring elements such as C, S, P, Si, Mn, Cr, Ni, etc.

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