| Material Grade: | TP304/304L ， TP316/316L ， TP321/321H， TP347/347H， TP310/310S ， S31803， S32750， S32760 ， S32205 ， UNS NO8904 | Standard: | ASME SA213 ， ASTM A213 ， ASME SA789 ， ASTM A789 ， ASME B677， ASTM B677 |
|---|---|---|---|
| NDT: | ET， UT， HT ， PT | ||
| High Light: | heat exchanger pipe， heat recovery pipe | ||
Stainless Steel Seamless Tube， ASTM A213， ASTM A789， Hydraulic Test / Eddy Current Test / Ultraulic Test.
Specification:
ASME SA213/A213: Standard Specification for Seamless Ferritic and Austenitic Alloy-
Steel Boiler， Superheater and Stainless Steel Heat Exchanger Tubes.
ASTM A249 / A249M:Standard Specification for Welded Austenitic Steel Boiler， Superheater
Heat-Exchanger， and Condenser Tubes.
Other Standard:DIN 17456 ， DIN 17458， EN10216-5， GOST 9940-81， GOST 9941-81， JIS-G3463，…
Material Grade:
American Standard | Austenitic Steel: |
Europen Standard | 1.4301，1.4307，1.4948，1.4541，1.4878，1.4550，1.4401，1.4404，1.4571，1.4438， 1.4841，1.4845，1.4539，1.4162， 1.4462， 1.4362， 1.4410， 1.4501 |
GOST | 08Х17Т，08Х13，12Х13，12Х17，15Х25Т，04Х18Н10，08Х20Н14С2， 08Х18Н12Б，10Х17Н13М2Т，10Х23Н18，08Х18Н10，08Х18Н10Т， 08Х18Н12Т，08Х17Н15М3Т，12Х18Н10Т，12Х18Н12Т，12Х18Н9， 17Х18Н9， 08Х22Н6Т， 06ХН28МДТ |
Size Range:
Production | Outside Diameter | Wall Thickness |
Heat Exchanger Tube | 6.00mm to 101.6mm | 0.5mm to 8mm |
Final Finishing
Solution Annealed & Pickled/Bright Annealed.
Type of Tubes:
U-bend & Straight.
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 |
Supplementary Testing : Apart from the above mentioned tests， we also carry out on the manufactured products supplementary testing. The tests conducted under this include:
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