A312 pipe Manufacturing Types
ASTM A312 stainless steel pipe and tube covers following manufacturing types (Including hot finished or cold finished):
a. Seamless Pipe (SMLS): It covers stainless steel seamless pipe or tube in hot rolling or cold drawn.
b. Welded Pipe (WLD): Welded by an automatic welding process that does not add filler metal when welding.
c. Cold Worked Pipe (HCW pipe): The heavy cold-worked pipe that apply cold working of not less than 35% reduction in thickness of both wall, and welded to the welded pipe prior to final annealing. Do not use fillers during welding.
d. Welded and HCW pipe: Welded pipe and HCW pipe of 14 and smaller than NPS 14 shall have a single longitudinal weld. After approval by the purchaser, the welded pipe and HCW pipe with an NPS greater than NPS 14 shall have a single longitudinal weld or shall be manufactured by forming and welding two longitudinal sections of flat stock. So each welds are to be tested, inspected, inspected or treated.
Pipe Process of ASME SA312 347H Stainless Steel Seamless tube / ASTM A312 347H Stainless Steel Seamless Pipes
Round Bar → Inspection & Analysis → Cut to Length → Coutering → Peel → Heating → Perforation → Inspection of Size → Pickling → Inspection of Surface → Lubricating → Cold-Drawing(Cold-Rolling) → Degreasing → Annealing→ Straightening → Cut → Corp End Cutting off → Pickling/Passivating → Final Inspection( UT/ET TEST or Hydrostatic Test) → Marking → Packing → Shipping
Product manufacturing standard:
ASTM A312 stainless steel pipe and tube covers following manufacturing types (Including hot finished or cold finished):
a. Seamless Pipe (SMLS): It covers stainless steel seamless pipe or tube in hot rolling or cold drawn.
b. Welded Pipe (WLD): Welded by an automatic welding process that does not add filler metal when welding.
c. Cold Worked Pipe (HCW pipe): The heavy cold-worked pipe that apply cold working of not less than 35% reduction in thickness of both wall, and welded to the welded pipe prior to final annealing. Do not use fillers during welding.
d. Welded and HCW pipe: Welded pipe and HCW pipe of 14 and smaller than NPS 14 shall have a single longitudinal weld. After approval by the purchaser, the welded pipe and HCW pipe with an NPS greater than NPS 14 shall have a single longitudinal weld or shall be manufactured by forming and welding two longitudinal sections of flat stock. So each welds are to be tested, inspected, inspected or treated.
Pipe Process of ASME SA312 347H Stainless Steel Seamless tube / ASTM A312 347H Stainless Steel Seamless Pipes
Round Bar → Inspection & Analysis → Cut to Length → Coutering → Peel → Heating → Perforation → Inspection of Size → Pickling → Inspection of Surface → Lubricating → Cold-Drawing(Cold-Rolling) → Degreasing → Annealing→ Straightening → Cut → Corp End Cutting off → Pickling/Passivating → Final Inspection( UT/ET TEST or Hydrostatic Test) → Marking → Packing → Shipping
GB |
ASTM/ASME |
JIS |
DIN |
EN |
GB/T14975-2002 |
A213/A213M |
G3446 G3447 |
DIN2462 |
EN10216-5 |
GB/T14976-2002 |
A249/A249M |
G3448 G3459 |
DIN2463 |
EN10217-7 |
GB13296-2007 |
A790/A790M |
G3463 G3468 |
DIN17457 |
|
GB/T12771-2008 |
A269 A358 |
|
DIN17458 |
|
GB/T12770-2000 |
A511 A688 |
|
|
|
GB/T19228.2 |
A778 A789 |
|
|
|
HG20537.2-92 |
A790 |
|
|
|
HG20537.3-92 |
B163 B167 |
|
|
|
HG20537.4-92 |
B338 B407 |
|
|
|
SH3501-2002 |
B423 B444 |
|
|
|
|
B622 B668 |
|
|
|
|
B677 B829 |
|
|
|
Steel Grades:
Austenitic |
Duplex |
Nickel Stainless |
Ti |
Ferrite |
304/L/H |
S31500 |
600625 |
Grade1 |
409L |
310S/H |
S32101 |
800825 |
Grade2 |
439 |
316/L/H |
S32003 |
400 |
Grade3 |
|
317/L |
S32304 |
N06985 |
|
|
321/H |
S31803 |
N10276 |
|
|
347/H |
S32205 |
|
|
|
S30432 |
S32750 |
|
|
|
S31042 |
S32760 |
|
|
|
904L |
|
|
|
|
6Mo(S79054) |
|
|
|
|
Application of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
1. Petrochemical industry;
2. Electric industry;
3. The shipbuilding industry;
4. Low-pressure heater;
5. Offshore Oil platform;
6. Nuclear Power industry
7. The Oil and Gas industry;
Chemical Composition of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
Mechanical Properties of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
Grade Specifications of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
DIMENSION Tolerance of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
Wall Thickness |
||
Permitted Variations in Wall thickness (%) |
||
Tolerance, % from Nominal |
||
NPS Designator |
Over |
Under |
1/8 to 2 1/2., all t/D ratios |
20 |
12.5 |
3 to 18 incl., t/D up to 5% incl. |
22.5 |
12.5 |
3 to 18 incl., t/D > 5% |
15 |
12.5 |
20 and larger, welded, all t/D ratios |
17.5 |
12.5 |
20 and larger, seamless, t/D up to 5% incl. |
22.5 |
12.5 |
20 and larger, seamless, t/D > 5% |
15 |
12.5 |
where: t=Nominal Wall Thickness D=Ordered Outside Diameter |
|
|
Outside Diameter |
Length(mm) |
|
Permitted Variations in Outside Diameter (mm) |
||
OD |
Tolerance |
Tolerance |
10.29 - 48.26 |
20 |
+6 /-0 |
48.26 - 114.30 |
22.5 |
|
114.3 - 219.08 |
15 |
|
219.08 - 457.20 |
17.5 |
Other Types of ASME SA312 347H Steel tube / ASTM A312 347H Stainless Steel tubes:
ASME SA312 / ASTM A312 347H SS SMLS Pipe |
ASME SA312 / ASTM A312 347H SS Welded Pipe |
ASTM A312 GR.347H Boiler Pipes Supplier |
SA249/ A249 TP347H Inox Tubes and pipes |
S34709 ASME SA312 Seamless Steel Pipes Exporter |
ASTM A269 347H inox Steel Welded Tubing Stockist |
A312 347H stainless Mechanical Pipes in Iraq |
347H ASTM A312 Stainless Steel welded Mechanical Tubes |
ASTM A312 GR.347H Cold drawn Seamless Steel Pipe in Korea |
A358 S34709 welded Inox Steel Tube stockist |
ASTM A312 1.4961 Hot Finished Seamless Steel Pipe in Germany |
A249 / SA249 Grade 347H ERW Welded steel Tubes |
IBR Approved GR.347H ASTM A312 Pipe |
IBR Approved ASTM A312 GR.347H Tubing Stockist |
ASTM A312 Steam Boiler Pipes in Peru |
ASTM A312 Steam Boiler Tubes Stockholder |
High Quality GR.347H A312 Boiler Pipes in Malaysia |
347H High Quality Boiler Tubes Manufacturer |