Black Annealing Iron TP321 ASTM A249 Welded Steel Tubes
Product Details
| Steel Grade: | TP304/304L, TP316/316L, TP321/321H, TP347/347H, TP310S, TP904L | Application: | Welded Austenitic Steel Boiler, Superheater,Heat-Exchanger, Condenser |
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| Standard: | ASTM A249/ASME SA249 | Shape: | Straight&U Bend |
| Highlight |
Black Annealing Welded Steel Tubes,TP321 Welded Steel Tubes,ASTM A249 Welded Steel Tubes |
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Product Description
Annealed Welded Steel Tubes Oiled Painted Black Anneal Round Tube Black
Production Information
a) For fluid & gas transport
b) Structure & machining etc
Advantages
a) Advanced technology of cold draw machine
b) Advanced annealing machine
c) Better mechanical property
d) More precise dimension
e) Perfect inspection method and inspection equipment etc
Size Range:
| Production | Outside Diameter | Wall Thickness |
| Boiler Pipe | 6.00mm to 630mm | 0.5mm to 52mm |
Final Finishing
Solution Annealed & Pickled / Bright Annealed.

Some of the quality tests carried out by us includes:
| Corrosion Test | Conducted only when specially requested by the client |
| Chemical Analysis | Test done as per required quality standards |
| Destructive / Mechanical Testing | Tensile | Hardness | Flattening | Flare | Flange |
| Reverse-bend and Re. flat tests | Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end |
| Eddy Current Testing | Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
Product Highlights
Annealed Welded Steel Tubes Oiled Painted Black Anneal Round Tube Black Production Information Commodity Annealed white stainless 304 steel pipe high quality for selling Grade Austenitic: 304/L/H/N, 316/L/H/N/Ti, 321/H, 309/H, 310S, 347/H, 317/L, 904L Duplex steel: S31803,S32205,S32750,S32760 ...
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