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Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing

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Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing

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Brand Name :	New Era
Model Number :	DIN2391 St35 NBK
Certification :	ISO9001,TS16949
Price :	Negotiation
Payment Terms :	T/T
Supply Ability :	3000 tons/month
Delivery Time :	45 days

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Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing

DIN2391 ST35 NBK Seamless Precision Steel Tubes

Seamless Carbon Cold Drawn / Cold Rolled Precision Steel Tubes

Material: St35
Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m
Delivery Condition: BK, BKW, BKS, GBK, NBK
Application: For high precision purpose, auto industry, like manipulator, Shock Absorber, Transmission Shaft, Steering Gear, Car Frame, etc.

Stable Quality with Comeptitive Price.
+N(Bright Annealing) Heat Treatment, Surface is bright and smooth, without oxide scale
Good Extending and Bending Ability.

Delivery Conditions

The tubes shall be manufactured from cold drawn or cold rolled processes. The tubes shall be supplied in one of the delivery conditions as follows:

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation.
Cold finished (soft)	BKW	The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).
Cold finished and stress-relieved	BKS	Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed	GBK	The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

Quality Control:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing or Cold Rolling, On line inspection
5. Heat Treatment:+SR, +A, +N
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.

Product Name	DIN2391 st35 NBK Seamless Precision Steel Tubes
Material	St35
Delivery Condition	BK, BKW, BKS, GBK, NBK
Standard	EN10305-1 / DIN2391 / EN10305-4
Size Range	OD: 6-88mm, WT: 1-15mm
Application	High precision purpose, auto parts, oil cylinder, etc
Round Billet	Bao Steel, Xingcheng Steel, Zhongtian Steel
Keyword	Seamless Steel Tube
Certificate	TS16949, ISO 9001
HS code	7304319000
Delivery Time	45 days
Pakcing	Bundles or Woodern Boxes

Steel Grade		Chemical Composition
Symbol	Material Number	C Max.	Si Max.	Mn	P Max.	S Max.
ST35	1.0308	0.17	0.35	≥0.40	0.025	0.025
ST45	1.0408	0.21	0.35	≥0.40	0.025	0.025
ST52	1.0580	0.22	0.55	≤1.60	0.025	0.025

Steel Grade		BK		BKW		BKS
Name	No.	Rm Mpa	A %	Rm Mpa	A %	Rm Mpa	ReH Mpa	A %
ST35	1.0308	480	6	420	10	420	315	14
ST45	1.0408	580	5	520	8	520	375	12
ST52	1.0580	640	4	580	7	580	450	10

Steel Grade		GBK		NBK
Name	No.	Rm Mpa	A %	Rm Mpa	ReH Mpa	A %
ST35	1.0308	315	25	340--470	235	25
ST45	1.0408	390	21	440--570	255	21
ST52	1.0580	450	22	490--630	355	22

FAQ:

1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.

You need to in charge of Express costs.

2. How about your production capacity?
3000 tons/Month.

3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.

4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.

5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade

3). Tube Size and Size Tolerance
4). Tube length

5). Quantity

6). If any special requirements

6. How about the minimum order quantity?
Normally for one size above 1 ton.

Welcome to contact us! Thanks.

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