Cold-drawn seamless profile tube with composite cross-section: round inner and square outer

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Material selection for Cold-drawn seamless profile tube with composite cross-section: round inner and square outer. The material grade, standard edition, delivery condition and acceptance requirements are confirmed in the order and technical agreement.

Supply and technical review · Creation Group accepts supply and technical review enquiries for this product. Dimensions, delivery condition, quantity and inspection documents are confirmed in the order technical agreement after review.

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Cold-drawn seamless profile tube with composite cross-section: round inner and square outer · Cold-drawn seamless shaped tube

01Applicable standardCustomer drawing / technical agreement

02Application / sectionCold-drawn seamless profile tube with composite cross-section: round inner and square outer

03Product formCold-drawn seamless shaped tube

04Delivery informationTo be confirmed against the order technical requirements

Material and technical conditions must be confirmed in the order

This page presents material products by form or application. The specific grade is determined by the order; no uniform composition or mechanical-property guarantees are specified. Missing parameters must not be assumed zero, and an approximate grade must not replace the material actually agreed.

The following grades from different standards systems are only leads for material-selection discussions. They do not establish one-to-one equivalence, direct interchangeability or confirmed supply.

Information required for technical confirmation

Material grade, applicable standard and edition, or a material specification accepted by the buyer.
Cross-sectional shape, dimensions, tolerances and drawing requirements.
Delivery condition, subsequent forming or heat-treatment conditions and actual application.
Acceptance items such as composition, mechanical properties and surface quality, together with the corresponding inspection requirements.

When the same product form uses different materials, the conditions for each material are listed separately. Actual supply and acceptance requirements are governed by the order, technical agreement and material certificate confirmed by both parties.

STANDARD & PROPERTIES

Material technical data

Only data directly related to this material is shown here. Inspection, equipment, process and packaging information is linked separately.

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1. Available material list

Applications	Material No.	DIN EN ISO	ASTM/AISI	JIS
	1.0304		AISI 1008	SWRM 8
	1.031		AISI 1010	SWRM 10
	1.0541		AISI 1040	SWRH 42A
	1.0517		AISI 1045	SWRH 47A
	1.0609			SWRH 57A
	1.0611			SWRH 62A
	1.0620			SWRH 77B
	1.0626			SWRH 82A
	1.0737		AISI 12L14	SUM24L
	1.0762		AISI 1144	SUM43
	1.7243		SAE 4118	SCM415
	1.7220		SAE 4135	SCM435
	1.7225	42CrMo4	SAE 4140	SCM440
	1.6523	20CrNiMo2-2	SAE 8620	SNCM220
	1.8159	51CrV4	SAE 6150	SUP10
	1.7104		SAE 9254	SUP12
	1.2067	100Cr6	SAE 52100	SUJ2
Structural steel	1.0038	S235JR	1015	SS330
	1.0577	S355J2	A738
	1.0050	E295		S490
	1.0060	E335		SM570
Free-cutting steel	1.0715	11SMn30	1213、1215	SUM22
	1.0718	11SMnPb30	12L13	SUM22L
	1.0726	35S20	1140
	1.0727	46S20	1146
Heat-treatable steel	1.0503	C45	1043、1045	S45CM，S45C
	1.0601	C60	1060	S60CM,S60C
	1.7218	25CrMo4	4130	SCM430
	1.7225	42CrMo4	4140	SCM440
Roller bearing steel and tool steel	1.7792	58CrMoV4
	1.3505	100Cr6	E52100	SUJ2
	1.1213	C53G	1050、1055	S50CM,S50C
	1.2842	90MnCrV8	A681
	1.7177	60Cr3
	1.8159	51CrV4	6145	SUP10
Case-hardening steel and nitriding steel	1.0401	C15	1015、1017	S15C
	1.7131	16MnCr5	5115
	1.5918	17CrNi6-6
	1.5920	18CrNi8
	1.6523	20CrNiMo2-2	8617\8620	SNCM220
	1.2764	X19NiCrMo4
	1.5752	15NiCr13	3310	SNC815
	1.8519	31CrMoV9

2. Surface quality

2.1 Hot-rolled profiles

Surface quality in accordance with standard EN 10163-3 or other national standards (ASTM, GB, JIS)
Surface roughness: Ra < 40 microns
Dimensional tolerance: max. 0.5 mm
Straightness: Standard s
1.0 mm/m; < 0.3 mm/m upon request
Twist: Standard 1/m; upon request ≤ 0.5/m
Cross-section: 10mm - 7000mm
Length: ≤ 12 m or cut to fixed lengths

2.2 Cold-rolled/cold-drawn profiles

Surface quality in accordance with EN 10277-1 or other national standards (ASTM, GB, JIS)
Surface roughness: Ra ≤
2.5 microns
Decarburization: ≤ 0.1mm
Straightness: ≤ 0.1mm/m
Twist: 0.25°/m
Dimensional tolerance: ≤ 0.05mm
Cross-section: 1mm - 3800mm
Length: ≤ 6 m or cut to fixed length

TECHNICAL NOTE

Application and ordering note

Chemical composition, mechanical properties, delivery condition and other technical requirements are subject to the currently applicable standard edition, customer drawings and the order technical agreement. Website information does not replace formal quality certification documents.

RFQ CHECKLIST

What to include in the enquiry

Grade and applicable standard
Diameter or section, delivery condition and quantity
Part drawing, forming stations or failure photos, if available
Testing, certificate or report requirements

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