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.
