Product Details:
Payment & Shipping Terms:
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| 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 Pressure Unalloyed Carbon Steel Seamless Tube , Heat Temperature Resistant
Specifications:
Surface Treatment:
Bare/Oiling/Black painting/Varnish/Passivation/Phosphating/Pickling or as per required
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 a kind of high performance, seamless circular tubes, made of unalloyed steels, which containes three steel grade: ST37.4, ST44.4, ST52.4.These tubes 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℃.
Applications:
1. construction of chemical plant
2. vessels
3. pipework
4. for general mechanical engineering purposes
Competitive Advantage:
1. Very competitive price with best quality
2. Best service: we take the whole responsiblity of our products and service. On-time delivery. Quality gurantee. etc.
3. Advanced equipment and continuesly developing technology.
