| Material: | TP304，TP304L，TP304H， TP304N， TP310S，TP316，TP316L，TP316Ti，TP316H， TP317，TP317L， TP321， TP321H，TP347， TP347H，904L… | OD: | 6.35mm TO 114.3mm |
|---|---|---|---|
| WT: | 0.71mm TO 3.4 Mm | Length: | 6 Meters Or According To Customer’s Request |
| High Light: | stainless welded pipe， stainless steel coiled tubing | ||
STAINLESS STEEL WELDED PIPE，ASTM A312 ASTM A358 TP316/316L TP321/321H BEVELLED END 100% RT. UT. HT. ET
TONG CHUANG GROUP deal with stainless steel welded pipe and tube already more than 10 years， every
year sell more than 5000 tons of stainless steel pipe and tube. Our client already cover more than 45
countries. Our Stainless Steel and tube was width used in Mining， Energy， Petrochemical，
Chemical Industry， Food plant， Paper plant， Gas and Fluid Industry etc.
Standard Specification:
ASTM A249 / A249M Standard Specification for Welded Austenitic Steel Boiler， Superheater，
Heat-Exchanger， and Condenser Tubes
ASTM A269:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing
for General Service
ASTM A312 / A312M:Standard Specification for Seamless， Welded， and Heavily Cold Worked
Austenitic Stainless Steel Pipes
ASTM A358/A358M:Standard Specification for Electric-Fusion-Welded Austenitic
ASTM A778:Standard Specification for Welded， Unannealed Austenitic Stainless
Steel Tubular Products
ASTM A789 / A789M:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Tubing for General Service
ASTM A790 / A790M:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipe
Others like BS， JIS ， DIN ， EN ， GOST standard we all can supply .
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 |
| Welded Pipe | 6.00mm to 830mm | 0.5mm to 48mm |
Final Finishing:
Solution Annealed & Pickled.
Bright Annealed.
ASTM A249 / A249M TP304L TP316L TP304 Stainless Steel Heat Exchanger tube Bright Annealed Welded Tube ASME SA213
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，…
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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