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[China]
Trade Verify
Address: No999 .wenzhou airport wenzhou city,zhejiang china
Contact name:BAIN SHEN
Wenzhou Zheheng Steel Industry Co.,Ltd |
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Verified Suppliers
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ASTM A269/312/213 Stainless steel seamless coiled tubing, heat exchanger tubes
zheheng steel supply heat exchanger tube ,ss seamless stainless steel coilded tubing, ss stainless steel heat exchanger tubes A213 standard china manufacturer ,304l ss seamless steel heat exchanger tubes exporter,316l ss stainless steel seamless heat exchanger tubes supplier in china ,with pickling and annealing surface is very popular in boilers and heat exchangers industry , water heater industry , air-conditioning industry etc . This kind of seamless tubes are have a very important position in our all products .
Process :
1 . We use Cold Drawn techonology to produce U bend tube
2 . U bend tubes produce will accordance to customer's drawings
3 . To avoid oxidation , inert gas (Argon) is passed through tubes
ID at the required flow rate
4 . The radius is checked for its OD and wall thinning with the
recommended specification
5 . We'll choose three different position or as customer's require
to make sure tubes quality . We'll do physical properties and
micro-structure test
6 . Visual inspection for waviness and cracks is done with Dye
Penetrant Test
7 . Each tube is then hydro tested at the recommended pressure to
check for leakage
Referenced Documents ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels A370 Test Methods and
Definitions for Mechanical Testing of Steel Products A941
Terminology Relating to Steel, Stainless Steel, Related
Alloys, and Ferroalloys A999/A999M Specification for General
Requirements for
Alloy and Stainless Steel Pipe A1016/A1016M Specification for
General Requirements for
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel
Tubes
E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets,Blooms, and
Forgings
chemical composition:
| ASTM A213 / A213 M | ||
| Elements | 304L(wt%) | 316L (wt%) |
| (C) Carbon, max | 0.035 | 0.035 |
| (Mn) Manganese, max | 2 | 2 |
| (P) Phosphorus, max | 0.045 | 0.045 |
| (S) Sulfur, max | 0.03 | 0.03 |
| (Si) Silicon, max | 1 | 1 |
| (Ni) Nickel | 8.0 - 12.0 | 10.0 - 14.0 |
| (Cr) Chromium | 18.0 - 20.0 | 16.0 - 18.0 |
| (Mo) Molybdenum | N/A | 2.0 - 3.0 |
| (Fe) Iron | Bal. | Bal. |
| (Cu) Copper | N/A | N/A |
| (N) Nitrogen | N/A | N/A |
production range:
| Austenitic Steel: | TP304,TP304L,TP304H,TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, TP317,TP317L, TP321, TP321H,TP347, TP347H,904L… |
| Duplex Steel : | S32101,S32205,S31803,S32304,S32750, S32760 Others:TP405,TP409, TP410, TP430, TP439 ... |
| Russia Standard | 08Х17Т,08Х13,12Х13,12Х17,15Х25Т,04Х18Н10,08Х20Н14С2, 08Х18Н12Б, 10Х17Н13М2Т,10Х23Н18,08Х18Н10,08Х18Н10Т, 08Х18Н12Т,08Х17Н15М3Т, 12Х18Н10Т,12Х18Н12Т,12Х18Н9, 17Х18Н9, 08Х22Н6Т, |
| European 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 |
product show:
