
DIN / ASME / ASTM A213 Seamless Stainless Steel Heat Exchanger Non-destructive testing of steel tubes
we as a exporter .manufacturer for ASTM A213 A/SA213 sus310tb Stainless Steel seamless tube / boiler tube/ heat exchanger tube many years ,all tubes will be strictly according to ASTM ,EN standard produce ,inspection ,each piece will be execute Non-destructive testing,Micrographic determination of the apparent grain size,available methods of chemical analysis
Sampling:
1 For flattening, flaring, and grain size requirements, the term
lot applies to all tubes, prior to cutting, of the same size(see
4.1.6) that are produced from the same heat of steel. When final
heat treatment is in a batch-type furnace, a lot shall
include only those tubes of the same size and from the same heat
that are heat treated inthe same furnace charge. When the final
heat treatment is in a continuous furnace or when the heat-treated
condition is obtained directly by quenching after hot forming, the
number of tubes of the same size and from the same heat in a lot
shall be determined from the size of the tubes as prescribed in
Table 6.
2 For tensile and hardness test requirements, the term lot applies
to all tubes prior to cutting, of the same size (see 4.1.6) that
are produced from the same heat of steel. When final heat treatment
is in a batch-type furnace, a lot shall include only
those tubes of the same size and the same heat that are heat
treated in the same furnace charge. When the final heat treatment
is in a continuous furnace, or when the heat-treated
condition is obtained directly by quenching after hot forming, a
lot shall include all tubes of the same size and heat, heat treated
in the same furnace at the same temperature, time at heat, and
furnace speed; or all tubes of the same size and heat,
hot formed and quenched in the same production run, except as
prescribed in 9.1.3.
Chemical composition:
GradeC | C | Si | Mn | P | S | Ni | Cr | Mo | N |
201(1Cr17Mn6Ni5N) | ≤0.15 | ≤1.0 | ≤5.5 | ≤0.06 | ≤0.03 | 3.5-5.5 | 16.0-18.0 | — | ≤0.25 |
202(1Cr18Mn8Ni5N) | ≤0.15 | ≤0.07 | ≤7.5 | ≤0.06 | ≤0.03 | 4.0-6.0 | 17.0-19.0 | — | ≤0.25 |
3040Cr18Ni9) | ≤0.08 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 8.0-11.0 | 18.0-20.0 | — | — |
3040Cr18Ni9) | ≤0.08 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 8.0-11.0 | 18.0-20.0 | — | |
304L(00Cr18Ni10) | ≤0.03 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 8.0-11.0 | 18.0-20.0 | — | — |
316(0Cr17Ni12Mo2) | ≤0.08 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | — |
316L(0Cr17Ni14Mo2) | ≤0.03 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | — |
321 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.04 | ≤0.03 | 9.0-12.0 | 17.0-19.0 | Ti≥5xC | |
409 | ≤0.08 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | ≤0.5 | 10.5-11.7 | Ti6xC%≤0.70 | |
409L | ≤0.03 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.5 | 10.5-11.7 | Ti8xC%≤0.70 | |
430 | ≤0.12 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 16.0-18.0 |
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 |
QUALITY CONTROL
1~ Incoming Raw Material Inspection
2~ Raw Material Segregation to avoid steel grade mix-up
3~ Heating and Hammering End for Cold Drawing
4~ Cold Drawing and Cold Rolling, on line inspection
5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
6~ Straightening-Cutting to specified length-Finished Measuring Inspection
7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8~ Packing and Stocking
ZHEHENG STEEL has passed approved by ABS, DNV, GL, BV, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2008, ISO 14001-2004 With good quality and competitive price, we warm a good reputation in domestic and international markets. We hope to build a good and long relationship with customers from home and abroad.
Wenzhou Zheheng Steel Industry Co.,Ltd
Zheheng steel is one incorporate of manufacturer, Exporter ,consultant ,stockist company specialized in the area of stainless steel tubing , pipe fittings ,Flanges and other stainless steel grade accessories . It is one-stop-shop company ,our team have more than 20 years experience in stainless steel field ,especially in heat exchanger tubing and large diameter pipes with ultra-long, ultra-thin, ultra-thick or ultra-large various and some special-purpose projects .
After years of efforts,we now became more and more stronger , we have consist of four company respectively located in wenzhou(headquarter),lishui,chengdu city,two factorys of ss stainless pipe workshop in lishui ,another one ss pipe fittings workshop located in wenzhou ,one domestic sales company located in chengdu.
On Time, On Budget, For Over 20 Years
Our reputation is for providing competitive prices, technical services and on time deliveries for every project for over 20 years. Our inventory is computerized so our employees can respond quickly to all your requests. If a specific product is not in stock when you request it, we guarantee same day shipping or shortest lead time available.
Our regular feture products are 304/304L,316L, 321,310s,austentic serious ,duplex steel 2205 ,hastelloy c276,inconel 625 ,and super stainless steel 904L , All of our products meet or exceed AISI/ASTM A213 ,A269,A312,EN 10216,GHOST 9941 ,GB,JIS standard. per your specific requirements and include full documentation.
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