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Annealed DOM Drawn Over Mandrel Automotive Steel Tubes SAE J525

Annealed DOM Drawn Over Mandrel Tubing SAE J525 Automotive Steel Tubes

Annealed DOM Drawn Over Mandrel Tubing, SAE J525 Automotive Steel Tubes

Quick Detail:
SAE J525 Welded Cold Draw Low Carbon Steel Tubing annealed for bending and flaring

Size range: O.D.:30-350mm W.T.:1-15mm L: 12000mm or Cut to Short Pieces as specified length

Applications: for Bending and Flaring, Auto Parts

Manufacture:
The tubing is made from flat-rolled steel shaped into a tubular form, the edges of which are joined and fused together by electric-resistance welding. After forming and welding, the tubing is normalized and subject to a cold-drawing operation that shall result in a 15% minimum reduction in cross-sectional are, of which 8% shall consist in a reduction in wall thickness. Sequent to cold working, the tubing shall be normailzed via an atmospherically controlled method to produce a finished product that will meet all requirement of SAJ525

Dimensions and Tolerances:
The tolerances applicable to the tubing outside diameter and inside diameter are shown in Table 1.
The tolerances applicable to the tubing wall thickness are shown in Table 2
Dimensional tolerances can only apply to two of the three tubing dimesions ( OD, ID, or wall)
Unless otherwise agreed upon between customer and us., dimensional tolerances shall apply to the tube OD and wall dimensions.

E155,E195,E235,E275,E355, other materials upon agreement with customers.

Steel grade		Minimum values for the delivery condition^ab
Steel grade		+C^C		+LC^C		+SR			+A^d		+N
steel name	steel number	R_mMPa	A %	R_mMPa	A %	R_mMpa	R_eHMPa	A %	R_mMPa	A %	R_m MPa	R_eH^CMPa	A %
E155	1.0033	400	6	350	10	350	245	18	260	28	270 to 410	155	28
E195	1.0034	420	6	370	10	370	260	18	290	28	300 to 440	195	28
E235	1.0908	490	6	440	10	440	325	14	315	25	340 to 480	235	25
E275	1.0225	560	5	510	8	510	375	12	390	21	410 to 550	275	21
E355	1.0580	640	4	590	6	590	435	10	450	22	490 to 630	355	22
a. R_m: tensile strength ; R_eH: upper yield strength (but see 11.1); A: elongation. For symbols for the delivery condition see Table 1.
b. 1 Mpa = 1 N/mm²
c. Depending on the degree of cold work in the finishing pass the yield strength may nearly be as high as the tensile strengths. For calculation purposes the following relations are recommended:
—— For delivery condition +C: R_eH ≥0.8 R_m
—— For delivery condition +LC: R_eH ≥0.7 R_m
d. For calculation purposes the following relations is recommended: R_eH ≥0.5 R_m
e. For tubes with outside diameter ≤ 30 mm and wall thickness≤ 3mm, the R_eH minimum values are 10 Mpa lower than the values given in this Table.

3. Production method:
Cold drawn on the welded steel tubes, to reach high accuracy on the OD and WT tolerance

4. Packing:
In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing
5. Deliver condition:
1). +C No heat treatment after the final cold drawing process
2). +LC After the final heat treatment there is a suitable drawing pass
3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere

Production Steel Tube:

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 and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking.
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

FAQ:
Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of honed tube ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

Product Tags:


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Categories	DOM Steel Tube
Brand Name:	TORICH
Model Number:	SAE J525
Certification:	ISO9001, ISO14001, TS16949
Place of Origin:	ZHEJIANG, CHINA
MOQ:	5Tons
Price:	USD1000-2000/ton
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	5000 Tons per Year
Delivery Time:	30-45 work days
Packaging Details:	DOM Steel Tubes are packed in wooden boxes in seaworthy packing.
Keyword:	DOM Steel Tube
Material:	1008 1010 1018 4130 4140 Etc
OD:	6mm-350mm
WT:	1mm-35mm
Length:	max 12000mm
Usage:	For Machinery, Automotive Parts Industry
Production Method:	ERW And Cold Drawn
Delivery Condition:	Sink-drawn, Normalizing,mandrel-drawn