310 Stainless Steel Stainless Steel Welded Tube Polished Stainless Steel Pipe Stainless Steel Flex Pipe
| Seamless & Welded Pipe From Plates as per ASTM A-358 | |
| Introduction and Scope |
This cover electric - fusion welded austenitic Chromium-nickel stainless steel pipe suitable for corrosive or high temperature service, both. Five classes of pipe are covered under this specification: Class 1: Double side welded using filler material and 100% radio graphed. |
| Materials | This specification covers 19 grades of material steel. The plate material comply with the requirements of ASTM A - 240. Most commonly manufactured grades are 304, 304L, 304H, 316, 316L 310. |
| Size Range | OD: 8" NB (219.08 mm) to 36"NB (914.04 mm) Thickness: NB Size in Schedule 5, 10, 10s, 40, 40s Length: As per customer specification. |
| Process Of Manufacture | The pipes are manufacutred from levelled plates which are edge bevelled and progessively "O" formed on hydraulic presses. The edges of the pipe are either manually TIG welded or continuously welded on Track and Boom. Weld portion is radiographed as per requirements. Annealing of pipe is carried out on continuous furnace. Pipe is further straightened, sized, end finished, pressure tested, pickled and passivated, marked and packed. |
| Tolerances | OD: +/- 0.5% of specified diameter based on circumferential measurement.
Thickness: Minimum thickness at any point not more than 0.3 mm under nominal Thick. Out of roundness: Difference between maximum & minimum OD% |
| Test | Transverse bend weld tests. Transverse tension test to ASME code IX para QW 150. Hydrostatic Test ASTM A-530. Radiographic classes1,3,4 to ASME Code VIII para UW 51, Class 5 to ASME. Sec. VIII para UW 52. |
| Marking | All pipes are marked as folows: SCORODITE, ASTM A-358, Class, Grade, Size , Schedule No., Heat No. |
|
Grade
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
|
201
|
≤0 .15
|
≤0 .75
|
5. 5-7. 5
|
≤0.06
|
≤ 0.03
|
3.5 -5.5
|
16 .0 -18.0
|
-
|
|
202
|
≤0 .15
|
≤l.0
|
7.5-10.0
|
≤0.06
|
≤ 0.03
|
4.0-6.0
|
17.0-19.0
|
-
|
|
301
|
≤0 .15
|
≤l.0
|
≤2.0
|
≤0.045
|
≤ 0.03
|
6.0-8.0
|
16.0-18.0
|
-
|
|
302
|
≤0 .15
|
≤1.0
|
≤2.0
|
≤0.035
|
≤ 0.03
|
8.0-10.0
|
17.0-19.0
|
-
|
|
304
|
≤0 .0.08
|
≤1.0
|
≤2.0
|
≤0.045
|
≤ 0.03
|
8.0-10.5
|
18.0-20.0
|
-
|
|
304L
|
≤0.03
|
≤1.0
|
≤2.0
|
≤0.035
|
≤ 0.03
|
9.0-13.0
|
18.0-20.0
|
-
|
|
309S
|
≤0.08
|
≤1.0
|
≤2.0
|
≤0.045
|
≤ 0.03
|
12.0-15.0
|
22.0-24.0
|
-
|
|
310S
|
≤0.08
|
≤1.5
|
≤2.0
|
≤0.035
|
≤ 0.03
|
19.0-22.0
|
24.0-26.0
|
|
|
316
|
≤0.08
|
≤1.0
|
≤2.0
|
≤0.045
|
≤ 0.03
|
10.0-14.0
|
16.0-18.0
|
2.0-
3.0
|
|
316L
|
≤0 .03
|
≤1.0
|
≤2.0
|
≤0.045
|
≤ 0.03
|
12.0 - 15.0
|
16 .0 -1 8.0
|
2.0 -
3.0
|
|
321
|
≤ 0 .08
|
≤1.0
|
≤2.0
|
≤0.035
|
≤ 0.03
|
9.0 - 13 .0
|
17.0 -1 9.0
|
-
|
|
630
|
≤ 0 .07
|
≤1.0
|
≤1.0
|
≤0.035
|
≤ 0.03
|
3.0-5.0
|
15.5-17.5
|
-
|
|
631
|
≤0.09
|
≤1.0
|
≤1.0
|
≤0.030
|
≤0.035
|
6.50-7.75
|
16.0-18.0
|
-
|
|
904L
|
≤ 2 .0
|
≤0.045
|
≤1.0
|
≤0.035
|
-
|
23.0·28.0
|
19.0-23.0
|
4.0-5.0
|
|
2205
|
≤0.03
|
≤1.0
|
≤2.0
|
≤0.030
|
≤0.02
|
4.5-6.5
|
22.0-23.0
|
3.0-3.5
|
|
2507
|
≤0.03
|
≤0.8
|
≤1.2
|
≤0.035
|
≤0.02
|
6.0-8.0
|
24.0-26.0
|
3.0-5.0
|
|
2520
|
≤0.08
|
≤1.5
|
≤2.0
|
≤0.045
|
≤ 0.03
|
0.19 -0. 22
|
0. 24 -0 . 26
|
-
|
|
410
|
≤0.15
|
≤1.0
|
≤1.0
|
≤0.035
|
≤ 0.03
|
-
|
11.5-13.5
|
-
|
|
430
|
≤0.1 2
|
≤0.75
|
≤1.0
|
≤ 0.040
|
≤ 0.03
|
≤0.60
|
16.0 -18.0
|
-
|
FAQ
1. If we travel to China to checking your facility, are you welcome?
Of course, why not?
we will provide the whole accompany from you landing in China.
Only Give us a call before your arrive.
We will pick up you from the airport, living in our company's hotel, and driving by car take you visiting our company.
Warm Welcome!
2. How many sales person in your team?
present 8 sales, but more hands help in work, total team is 20+ workers.
So do not worry, not the one person company.
3. How Many Years of your company working in this industry?
We are 20+ years, from last century.
Expanding the market, and cultivate our techniques, two ways all in work together.
4. Could you show me some photos of your producing working?
here, following is our working plant, all is same when you come to China to audit.
