Technical Specification

Stainless Steel Pipes & Tubes:

Description	Size range	Specification	Grades
S.S. Seamless Pipes	1/4" NB to 16" NB SCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS.	ASTM A-312, A-213, A-269, A-268	TP-304, 309, 310, 304L 316, 316L, 316H, 316Ti, 321, 310, 304H, 347, 347H, 904L
S.S. Welded Pipe	1/4" NB to 20" NB SCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS.	ASTM A-312, A-778, ASTM-249, A-269, A-270, ASTM A-668 ASTM A-249; IS 13316 ASTM-A 249, A-554;	TP-304, 304L, 309,. 316, 316L, 316H, 316Ti, 321, 310, 304H, 347, 347H, 904L
C.S. Seamless Pipes	1/4" NB to 16" NB SCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS.	ASTM A-106, ASTM A 53, ASTM A 210	A, B & C, A & B, A-1 BS 3059 Part I, II, SA 179 With IBR TC & Non IBR etc.
Alloy Steel Seamless Pipes	1/4" NB to 20" NB, SCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS.	ASTM A- 335	P1, P2, P5, P11, P12, P22, P91

Grades and Specifications of Alloy steel In India :

Chrome Molybdenum Steel
Overview	We supply chromium molybdenum steel, chromium molybdenum nickel steel and chromium molybdenum tungsten steel to different engineering, power plant, oil & gas, petrochemical, welded tube fitting and atomic commercial enterprises. Our offices empower us to coddle the particular necessity of the clients.
Application	Tube & Pipe fittings, Boiler Pressure Vessels, refinery equipments for elevated temperature service.
Grades	ASTM A387 Grade 11/ 12/ 22/ 5/ 9/ 91, EN 10028 -2 / DIN 17175 , ASTM A204 / A302, SAE 4130 / 4140 / 8620, EN 19 / EN 24 / EN 36
Supply Condition	Normalized & Tempered / Annealed / Normalized.

Abrasion / Wear Resistant Steel
Overview	The solidified boron steel is amazingly impervious to grating wear and high surface weight. The outstanding mechanical properties of boron steels are attained to through warmth treatment. It additionally offers great weld ability with cool curving properties.
Application	Wherever requests are forced on abrasion resistance e.g. dump trucks, excavators, loaders, chutes, conveyors, feeders etc.
Grades	500HB / 400HB / 300HB / 200HB
Supply Condition	Quenched & Tempered(If required)

Quenched and Tempered Steel
Overview	Extinguished and tempered fine grained steel is utilized for welded steel structures having requests of low weight and high load.
Application	Pressure vessels, bridges, penstocks, transport vehicles, frameworks, cranes, conveying plants etc.
Grades	EN 10025-6-S500 / S550 / S620 / S690
Supply Condition	Quenched and Tempered

High Tensile Steel
Overview	The structural steel with high tensile properties is utilized for general development in order to decrease the segment weight.
Application	Engineering construction, Fabrication
Grades	EN 10025-2-S355 / S420 / S460. IS 2062 E350/ E410 / E450
Supply Condition	Normalised / Normalised Rolled

Corrosion Resistant Steel
Overview	It displays expanded imperviousness to atmospheric corrosion contrasted with unalloyed steel as it structures and recovers a defensive layer affected by the climate.
Application	Steel frame structures, containers, tanks, exhaust systems, bridges etc.
Grades	ASTM A588 / A242. IRSM – 41
Supply Condition	Normalised Rolled / Normalised

Tool Steel
Overview	Hot & Cold work apparatus steels according to the Standard (A681) and additionally client prerequisite is delivered in view of configuration application, administration condition and sought properties.
Application	Tools, Fixtures & Dies
Grades	A2 / H11 / O1 / D2 / D3/ S-13 / HCHCR
Supply Condition	Spherodise Annealed

Pressure Vessel Steels
Overview	This Carbon steel plates are expected for welded weight vessels, iron structures where enhance score strength is vital.
Application	Tube Fittings, Pressure Vessel Boiler
Grades	ASTM A516 / A515. ASTM A537 CL.1 & CL.2
Supply Condition	Normalised / Normalise Rolled/ Quenched & Tempered

Other Alloy Steels
Overview	The various special steels having diverse applications are produced as per customer requirement.
Application	Automobile, Bearing, Valves, Springs, Extruders
Grades	16/20MnCr5,EN52, EN1A,EN41, EN31,56Si7,42CrMo4
Supply Condition	As Rolled / Annealed / Normalised / Quenched & Tempered

Stainless Steel Tube Fitting

TUBING SELECTIONS

Stainless steel 304, 309, 316 and 316l fully annealed seamless tubing according to standard ASTM a213 or ASTM a269 or equivalent, are suitable for use with tube fittings.

The tubing ought to be compatible with the method fluid, pressure and temperature.

For good performance of tube fittings, the tubing ought to be moderately spherical, free from nicks, scratches, the surface end ought to be smart and tube ends ar squarely cut and should be free from burrs.

The hardness of tubing as desired is 80Rb; the most allowed by ASTM is 90Rb.

TUBING DATA TABLES FOR FRACTIONAL SIZE : ALLOWABLE WORKING PRESSURE (PSI)
Tubing O.D.	WALL THICKNESS IN INCH
	0.028	0.035	0.049	0.065	0.083	0.095	0.109	0.120
1/8	8600	10900
3/16	5500	7000	10300
1/4	4000	5100	7500	10300
5/16		4100	5900	8100
3/8		3300	4800	6600
1/2		2600	3700	5100	6700
5/8			3000	4000	5200	6100
3/4			2400	3300	4300	5000	5800
7/8			2100	2800	3600	4200	4900
1				2400	3200	3700	4200	4700

TUBING DATA TABLES FOR METRIC SIZE : ALLOWABLE WORKING PRESSURE IN BAR
Tubing O.D.	WALL THICKNESS IN MILLIMETER
	0.5	0.6	0.7	0.8	1.0	1.2	1.5	1.6	1.8	2.0	2.2	2.5	3.0
3	497	607	718	828	1032
6			331	386	497	607	774	912
8			208	280	359	440	558	607
10				221	280	342	440	473
12				182	231	280	359	386	440	497
14					195	237	302	324	369	416	463	535	654
16					169	205	361	280	319	358	398	460	564
18					150	181	230	246	280	314	349	403	496
22					121	147	185	199	225	252	280	322	394
25					108	128	162	173	196	220	244	280	342

Note: Working pressure for seamless tubing. For single welded tubing multiply pressure rating by 0.80. For double welded tubing multiply pressure rating by 0.85.

FACTORS USED TO DETERMINE ALLOWABLE PRESSURE AT HIGHER TEMPERATURES.
°F	°C	a.I.S.I. 316
200	93	1
400	204	0.96
600	316	0.85
800	427	0.79
1000	538	0.76
1200	649	0.37

For Example : The allowable pressure for type SS 316, Size 1/4" OD x 0.035 wall at 600°F(316°C) would be equivalent to 5100 psi x 0.85 = 4335 psi.

GAS SERVICE Extra care should be taken whereas choosing tubing for gas application, so as to attain a tight seal, ferrules in instruments fittings should seal any minor surface imperfections. The thick walled tubing helps the ferrules to beat minor surface imperfections we recommends the subsequent minimum wall thickness of tubing for gas application GAS APPLICATION TUBING

GAS APPLICATION TUBING
Tube OD(Inches) Nominal Minimum Wall Thickness(Inches) 1/8" 0.028" 3/16" 0.028" 1/4" 0.028" 5/16" 0.035" 3/8" 0.035" 1/2" 0.049" 5/8" 0.065" 3/4" 0.065" 7/8" 0.083" 1" 0.083"	Tube OD(Metric) Nominal Minimum Wall Thickness(Metric) 3 mm 0.8 mm 6 mm 0.8 mm 8 mm 1.0 mm 10 mm 1.0 mm 12 mm 1.0 mm 14 mm 1.2 mm 16 mm 1.5 mm 18 mm 1.5 mm 20 mm 1.8 mm 22 mm 2.0 mm 25 mm 2.2 mm

PIPE END NPT and ISO PRESSURE RATINGS

Fitting that has both tube and pipe thread ends can have different pressure ratings. The pipe end pressure ratings chart given below for SS316 shows the pressure ratings for male and female pipe thread ends.

Working pressure is calculated on ANSI code for pressure piping B31.3 basis.

Tube OD(Inches)	WORKING PRESSURE IN PSIG
	MALE THREAD		FEMALE THREAD
	Straight Fittings	Shape Fitting	Straight Fittings	Shape Fitting
⅛"	9100	9100	6400	5500
¼"	7500	7500	6600	5600
⅜"	7200	7200	5300	5000
½"	6600	5800	5200	4500
¾"	6400	6400	4300	3500
1"	4600	4600	4500	3900

SAE/MS PRESSURE RATINGS FOR SS316 Pressure ratings are from SAE J1926/3

SAE/MS THREAD SIZE	Non Positionable	Positionable
	PSIG	PSIG
5/16-24	4568	4568
7/16-20	4568	4568
1/2-20	4568	4568
9/16-18	4568	3626
3/4-16	4568	3626
7/8-14	3626	2900
1.1/16-12	3626	2900
1.3/16-12	2900	2320
1.5/16-12	2900	2320