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Stainless Steel Seamless Tubes

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Product Description

We are counted amongst the dependable Seamless Stainless Steel Tubes Exporters from India. The Stainless Steel Seamless Tubes are widely demanded in the market as no alternative is available in terms of quality and performance. Additionally, customers are eased with the availability of the Seamless Steel Tubes in varied sizes and dimensions.

Specifications :

ASTM- Standards
- A 213 / SA 213 Seamless ferritic and austenitic alloy steel boiler, super heater and heat Exchanger tubes.
- A 249 / SA 249 Welded austenitic steel boiler, Super Heater, Heat Exchanger and Condenser Tubes.
- A 268 / SA 268 Seamless and welded ferritic and martensitic stainless steel tubing for general service.
- A 269 /SA 269 Seamless and welded austenitic stainless steel tubing for general service.
- A 312 / SA 312 Seamless and welded austenitic stainless steel pipes.
- A 358 / SA 358 Welded pipe for High temperature service.
- A 688 / SA 688 For Welded feed water heater 'U' Tubes.
STM- Standards
- GOST
  - GOST 9940 Seamless stainless steel tubes, hot finished.
  - GOST 9941 Seamless stainless steel tubes, cold and hot finished.
German-Standards
- DIN 17456 Seamless circular austenitic stainless steel tubes for general service.
- DIN 17457 Welded circular austenitic stainless steel tubes subject to special requirements.
- DIN 17458 Seamless circular austenitic stainless steel tubes subject to special requirements.
- DIN 28180 Seamless steel tubes for heat exchangers.
- SEW 400 Stainless steels.
- AD 2000-W2 Materials for pressure vessels - austenitic stainless steels.
- DIN EN ISO 1127
NF-Standards
- NF A 49-117 Seamless ferritic and austenitic stainless steel tubes for general service.
- NF A 49-217 Seamless ferritic, austenitic, and ferritic-austenitic stainless steel tubes for heat exchangers.
- BS-Standards
- BS 3059 Steel boiler and super heater tubes
- BS 3605 Austenitic stainless steel pipes and tubes for pressure purposes
- BS 3606 Steel tubes for heat exchangers
- JIS-Standards
- JIS G 3459 Stainless steel pipes
- JIS G 3463 Stainless steel boiler and heat exchanger tubes

Highlights of ASMI specification for stainless steel tubes and pipes

Specification	Allowable Outside Diameter Variation in mm	Allowable Outside Diameter Variation in mm	Allowable Outside Diameter Variation in mm	Allowable wall thickness Variation	Allowable wall thickness Variation
Specification	Diameter	Over	Under	Over %	Under %	Over	Under	Testing
ASTM - 270 Seamiess & Welded	25.4 38.1 50.8 63.5 76.2	.05 .05 .05 .05 .08 .08	.20 .20 .28 .28 .30 .38	+12.5 +12.5 +12.5 +12.5 +12.5 +12.5	-12.5 -12.5 -12.5 -12.5 -12.5 -12.5	3.2 3.2 3.2 3.2 3.2 3.2	0 0 0 0 0 0	Reverse flattering test 100% hydrostatic test external polish on all tubes refer to ASTM A-270
ASMI A - 249 Welded boiler, superheater heat exchanger and condenser tubes	Under 25.4 25.4-38.1 incl. 38.1-50.8 excl. 50.8-63.5 excl. 63.5-76.2 excl. 76.2 - 101,6 incl	0.1016 0.1524 0.2032 0.2540 0.3048 0.3810	0.1016 0.1524 0.2023 0.2540 0.3048 0.3810	+10 +10 +10 +10 +10 +10	-10 -10 -10 -10 -10 -10	3.175 3.175 3.175 3.760 3.760 3.760	0 0 0 0 0 0	Tension test fletting test flare test * Reverse bend test hardness test 100% Hydrostatic test reverse flattering test refer to ASMI A-450 Whenever applicable
ASMI A-312 Seamless & welded pipes	13.7-48.3 incl. 48.3-114.3 incl. 114.3-220 incl.	0.40 0.79 1.59	0.79 0.79 0.79	Minimum wall tubes 12.5% under nominal wall specifications	Minimum wall tubes 12.5% under nominal wall specifications	6.4 6.4 6.4 (Normally random lengths ordered)	0 0 0 (Normally random lengths ordered)	Tension Test flattening test 100% hydrostatic test
ASMI A - 269 Seamless & welded tubes	Upto 12.7 12.7-38.1 excl. 38.1-88.9 excl. 88.9-139.7 excl. 139.7-203.2 excl.	0.13 0.13 0.25 0.38 0.76	0.13 0.13 0.25 0.38 3.76	+15 +10 +10 +10 +10	-15 -10 -10 -10 -10	3.2 3.2 4.8 4.8 4.8	0 0 0 0 0	Tension test flange test (Welded only) Hardness test reverse flattening test (Welded only) 100% Hydrostatic test refer to ASMI A-269
ASMI A-213 Seamless boiler, superheater and heat exchanger tubes	Upto 25.4 25.4 - 38.1 incl. 38.1 - 50.8 incl. 50.8 - 63.5 incl. 76.2 - 101.6 incl.	0.1016 0.1524 0.2032 0.2540 0.3048 0.3810	0.1016 0.1524 0.2032 0.2540 0.3048 0.3810	+20 +20 +22 +22 +22 +22	-0 -0 -0 -0 -0 -0	3.175 3.175 3.176 3.760 4.760 4.760	0 0 0 0 0 0	Tension test flattening test hardness test 100% Hydrostatic test Refer to ASMI A-269
ASMI A-268 Seamless & welded femtic stainless steel tubes	Upto 12.7 12.7-38.1 excl. 38.1-88.9 excl. 88.9-168.9 excl.	0.13 0.13 0.25 0.38	0.13 0.13 .25 0.38	+15 +10 +10 +10	-15 -10 -10 -10	3.2 3.2 4.8 4.8	0 0 0 0	Tension test flange test CERW only hardness test reverse flattering test 100% hydrostate test
ASTM A- 358 For welded big diameter pipes	For all size	+0.5%	0.5%	No Limit	-0.3 mm	Customer;s specification	Customer;s specification	-