|
Product Details:
Payment & Shipping Terms:
|
| STANDARD: | DIN | SHAPE: | ROUND |
|---|---|---|---|
| CERTIFICATE: | PED, ISO9001, ISO14001, OHSAS 18001 | PLACE OF ORIGIN: | JIANGSU, CHINA |
| SECONDARY OR NOT: | BRAND NEW | PROCESSING: | SEAMLESS |
| SURFACE: | BARE, OIL, VARNISH, BLACK | ||
| High Light: | mild steel pipes,seamless mild steel tube |
||
Cold Drawn Seamless Mild Steel Tube DIN 1630 With OD16mm - 90mm WT 1.5-12mm
DIN1630 HIGH PERFORMANCE SEAMLESS COLD DRAWN STEEL TUBE
Specifications:
Surface Treatment: Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling
Ends: PE, ends caps
Marking: as per requirement
Delivery Condition: Annealed/Normalized/Tempered
Size:(mm)
OD: 16~90mm WT: 1.5-12
or as per customer’s requirement
Length: ≤16m. Fixed Length (6m,9m,12m, 16m or as per requirement) or random length
Package: Hexagonal Bundles with steel strips and plastic wrapping outside/Wooden box/Wooden crate/Steel frame/As per customer’s requirement
CHEMICAL COMPOSITION (%):
|
CHEMICAL COMPOSITION (CAST ANALYSIS) IN% |
||||||
|
Grade |
C≤ |
Si≤ |
Mn |
P≤ |
S≤ |
|
|
ST 37.4 |
1.0255 |
0.17 |
0.35 |
≥ 0.35 |
0.040 |
0.040 |
|
ST 44.4 |
1.0257 |
0.20 |
0.35 |
≥ 0.40 |
0.040 |
0.040 |
|
ST 52.4 |
1.0581 |
0.22 |
0.55 |
≤ 1.60 |
0.040 |
0.035 |
MECHNICAL PROPERTIES:
|
STEEL GRADE |
Tensile Strength σb(Mpa) N/mm2 |
Yield Strength σs(Mpa) (WT in mm) |
Elongation δ(%) (L=5do) |
IMPACT (DVM—TEST SAMPLE) |
|||||||
|
≤16 |
＞16≤40 |
＞40≤65 |
L |
T |
L |
T |
|||||
|
(MIN) N/mm2 |
% (MIN) |
δ (MIN) |
|||||||||
|
ST 37.4 |
1.0255 |
350-480 |
235 |
225 |
215 |
25 |
23 |
43 |
27 |
||
|
ST 44.4 |
1.0257 |
420-550 |
275 |
265 |
255 |
21 |
19 |
43 |
27 |
||
|
ST 52.4 |
1.0581 |
500-650 |
355 |
345 |
335 |
21 |
19 |
43 |
27 |
||
DIMENSION TOLERANCE:
|
OD (mm) |
Permissible daviation in OD |
||
|
Tube Barrel and tube ends |
At tube ends, subject to particular agreement 1) |
||
|
≤ 100 |
±1% (value up to ±0.5mm are permitted) |
± 0.4 mm |
|
|
100 − 200 |
±1% |
± 0.5% |
|
|
> 200 |
±1% |
± 0.6% |
|
|
Length Tolerance (mm) |
|||
|
≤6000 |
0 - +10 |
||
|
6000<L≤12000 |
0 - +15 |
||
|
>12000 |
By Agreement |
||
INSPECTION AND TEST:
CHEMICAL COMPOSTION TEST. MECHANICAL PROPERTIES TEST(tensile strength, yield strength, elongation, flaring, flattening,impact, etc). SURFACE AND DIMENSION CHECK. NON-DESTRUCTIVE TEST(eddy current test/ultrasonic test), HYDRAULIC TEST.
Description:
DIN1630 is the standard for high performance seamless steel pipe, steel grades containes ST37.4, ST44.4, ST52.4. It applies to seamless circular tubes and pipes made of unalloyed steels. These pipes are pradominantly used in the construction of chemical plant, vessels, pipework and for general mechanical engineering purposes. They are designed to meet high performance requirements. Normally, there are no limiting values for the maximum permissible working pressure of these tubes. The permissible working temperature shall not exceed 300℃.
Top quality products
Applications:
Mainly used in the construction of chemical plant, vessels, pipework and for general mechanical engineering purposes. And designed to meet high performance requirements, etc.
Competitive Advantage:
Serious quality control on billet and finished products. Advanced equipment, serious attitude on quality, good technology make us can maitain the good and stable product's quality.Always put customers' benefits before ours make customers set up very good long-term relationships with us.
Contact Person: Mr. zhang
Tel: 18810288990
Fax: 86-189-9086-7684
