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STK400 Carbon Structural Steel tubes

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Payment Type:

L/C,T/T,D/P,Paypal,Money Gram,Western Union

Incoterm:

FOB

Min. Order:

1 Bag/Bags

Transportation:

Ocean,Land,Air

Port:

Shanghai,Shanghai,Shanghai

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Product Description

Product Attributes
Supply Ability & Additional Information
Packaging & Delivery

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Overview

Product Attributes

Model No.: JIS G3466

Brand: Torich

Type: Seamless

Certification: UL

Application: Structure Pipe

Section Shape: Square And Rectangle

Surface Treatment: Oiled

Usage: Construction & Decoration

Technique: Cold Drawn

Material: STKR 400 STKR 490

Coating: Zinc

Standard: JIS G3466

End: Plain Or Chamfering

Supply Ability & Additional Information

Packaging: In bundles or in wwoden boxes

Productivity: 50000 tons per year

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 50000 tons per year

Certificate: ISO 9001 TS16949 ISO14001

HS Code: 7304399000

Port: Shanghai,Shanghai,Shanghai

Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union

Incoterm: FOB

Packaging & Delivery

Selling Units:: Bag/Bags

Package Type:: In bundles or in wwoden boxes

Relevant standard :KS D 3568 ASTM A500 BS EN 10025

Square and rectangle Carbon steel square pipes for structural purpose

Production method: ERW ARC welding Seamless

CHEMICAL COMPOSITION % max
Steel grade	C	Si	Mn	P	S
STKR 400	0.25	-	-	0.04	0.04
STKR 490	0.18	0.55	1.5	0.04	0.04

MECHANICAL PROPERTIES min
Steel grade	Tensile strength Mpa	Yeild point or proof stress Mpa	Elongation %
Steel grade	Tensile strength Mpa	Yeild point or proof stress Mpa	Elongation %
STKR 400	400	245	23
STKR 490	490	325	23

Dimensional tolerance
Specified item and dimension		Dimensional tolerance
length of side	100mm or under	±1.5mm
	over 100mm	±1.5%
Unvenness of flat plate portions	side length 100mm or under	0.5mm max
	side length over 100mm	within 0.5% of side length
Angularity made by adjacent flat plate portions		±1.5°
Dimension at corner:s		3t max
Length		+ not specified 0
Un-straightness		Within 0.3%
Wall thickness :t	Square steel tube manufacture by welding	under 3 mm ±0.3mm 3mm or over ±10%
	Seamless Square Steel Tube	under 4mm ±0.6mm 4mm or over ±15%