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Stainless steel welded tube is a type of tubing made from stainless steel that has been welded together at the seam. It is commonly used in applications where high strength, durability, and resistance to corrosion are required, such as in the construction of pressure vessels, heat exchangers, and piping systems.The manufacturing process for stainless steel welded tubes involves first forming a flat strip of stainless steel into a tube shape. The edges of the strip are then heated to a high temperature and fused together using an electric current or a high-energy beam. This process creates a strong, continuous seam along the length of the tube.

Ống thép không gỉ hàn is available in a variety of sizes, wall thicknesses, and grades of stainless steel, including austenitic, ferritic, and duplex grades. The choice of grade and wall thickness will depend on the specific application and the required mechanical properties of the tubing.

Table of Content：

Specification and Sizeof Stainless Steel Welded tube
Ứng dụng of Stainless Steel Welded tube
Types Of Stainless Steel Welded Tubes
SS WELDED TUBING OD TOLERANCE & WALL THICKNESS TOLERANCE CHART
Chemical Properties of Stainless Steel Welded tube
Mechanical Properties of Stainless Steel Welded tube
SS WELDED TUBE PRESSURE RATING

Specification and Size of Stainless Steel Welded tube

Available Specification

Product Name	Executive Standard	Kích thước	Steel Code / Steel Grade
Industrial Pipes	ASTM A312, A358, A778 JIS G3459	OD: 1/4″~40″ WT: SCH5S~SCH80S	TP304, TP304L, TP316L, SUS304TP
Tubes for Boiler and Heat-Exchanger, General Service Tubing	ASTM A249, A269, JIS G3463	OD: 15.9~139.8mm WT: 1.6~5.0mm	TP304, TP304L, TP316L, SUS304TB
Mechanical and Structural Tubes	ASTM A554, JIS G3446	OD: 7.9~152.4mm WT: 0.5~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD SUS304
Square Tubes	ASTM A554	OD: 12.7×12.7~150x150mm WT: 0.7~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Rectangular Tubes	ASTM A554	OD: 10×20~100x200mm WT: 0.7~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Sanitary Tubing	ASTM A270 JIS G3447	OD: 25.4~165.2mm WT: 0.8~3.05mm	TP304, TP304L, TP316L, SUS304TBS
Large Gauge Pipes for Ordinary Piping	JIS G3448	OD: 15.88~318.5mm WT: 0.8~3.0mm	SUS304TPD
Large Diameter Pipes	JIS G3468	OD: 14″~40″ WT: SCH5S~SCH40S	SUS304TPY

Ứng dụng of Stainless Steel Welded tube

Stainless Steel Welded tube are being found in an extensive range of applications such as in Oil & Gas, Refinery, Petrochemical, Chemical, Fertilizer, Power, Automotive, Bearing, Mechanical & Structural applications.

Types Of Stainless Steel Welded Tubes

Stainless Steel Welded Tubes
SS Welded Tubes
Stainless Steel ERW Tubes
SS ERW Tubes
ASTM A249 Stainless Steel Welded Tubes
SS Welded Tubes Price in Bengaluru
ASTM A249 Stainless Steel Welded Tubing Suppliers in Thane
Stainless Steel Welded Tubes Stockist in Dahej
AISI SS Welded Tubes
SS Welded Tubing
ASME Stainless Steel ERW Tubes
SS ERW Tubing
AISI Stainless Steel Welded Tubes
SS Welded Tubes Suppliers in Ankleshwar
Stainless Steel ERW Tubing Stockholder in Pune
Stainless Steel Welded Tubes Manufacturer in Hyderabad

SS WELDED TUBING OD TOLERANCE & WALL THICKNESS TOLERANCE CHART

Stainless Steel Welded Tube OD Tolerance
NPS	+		–
	inch	mm	inch	mm
1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48	1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187)	0.4 0.8 1.6 2.4 3.2 4.0 4.8	1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031)	0.8 0.8 0.8 0.8 0.8 0.8 0.8

NPS	Stainless Steel Tube Wall Thickness Tolerance, %
NPS	+	–
1/8-2 1 /2	20.0	12.5
3~18, t/D≤ 5%	22.5	12.5
3~18, t/D> 5%	15.0	12.5
≥ 20, welded	17.5	12.5
≥ 20, seamless, t/D≤ 5%	22.5	12.5
≥ 20, seamless, t/D> 5%	15.0	12.5

Chemical Properties of Stainless Steel Welded tube

Chemical Composition (For Reference)

JIS Specification

Spec.JISG4303,G4304,G4305,G4312

Steel Grade	C% Max.	Si% Max.	Mn% Max.	P% Max.	S% Max.	Cr% Max.	Ni% Max.	Mo% Max.	Ti% Max.	Other
SUS 201	0.15	1.0	5.5~7.5	0.06	0.03	16.0~18.0	3.5~5.5	–	–	N:0.25
SUS 202	0.15	1.0	7.5~10.0	0.06	0.03	17.0~19.0	4.0~6.0	–	–	N:0.25
SUS 304	0.08	1.0	2.0	0.045	0.03	18.0~20.0	8.0~10.5	–	–	–
SUS 304L	0.03	1.0	2.0	0.045	0.03	18.0~20.0	9.0~13.0	–	–	Cu:1.0~3.0
SUS 316L	0.03	1.0	2.0	0.045	0.03	16.0~18.0	12.0~15.0	2.0~3.0	–	–
SUS 430	0.12	0.75	1.0	0.04	0.03	16.0~18.0	–	–	–	–

Mechanical Properties of Stainless Steel Welded tube

Mechanical Property (For Reference)

JIS Specification

Spec.JISG4303,G4304,G4305,G4312

Steel Grade	N/mm ₂ MIN. Tensile Stress	N/mm ₂ MIN. Áp suất giới hạn	Elongation MIN.	HRB MAX. Hardness	Bendability:Bending Angle	Bendability:Inside Radius
SUS 201	520	275	40	100	No Require	–
SUS 202	520	275	40	95	No Require	–
SUS 304	520	205	40	90	No Require	–
SUS 304L	480	175	40	90	No Require	–
SUS 316L	480	175	40	90	No Require	–
SUS 430	450	205	22	88	180°	1.0 time the thickness

SS WELDED TUBE PRESSURE RATING

OD inches	Ave. Wall inches	Min Yield Strength (PSI)	Min Tensile Strength (PSI)	*Theoretical Burst Pressure (PSI)**	Working Pressure (PSI) 25% of Burst	Theoretical Yield Point (PSI)**	Collapse Pressure * (PSI)**
0.250	0.020	30,000	75,000	14,286	3,571	5,714	4,416
0.250	0.028	30,000	75,000	21,649	5,412	8,660	5,967
0.250	0.035	30,000	75,000	29,167	7,292	11,667	7,224
0.250	0.049	30,000	75,000	48,355	12,089	19,342	9,455
0.250	0.065	30,000	75,000	81,250	20,313	32,500	11,544
0.375	0.020	30,000	75,000	8,955	2,239	3,582	3,029
0.375	0.028	30,000	75,000	13,166	3,292	5,266	4,145
0.375	0.035	30,000	75,000	17,213	4,303	6,885	5,077
0.375	0.049	30,000	75,000	26,534	6,634	10,614	6,816
0.375	0.065	30,000	75,000	39,796	9,949	15,918	8,597
0.500	0.020	30,000	75,000	6,522	1,630	2,609	2,304L
0.500	0.028	30,000	75,000	9,459	2,365	3,784	3,172
0.500	0.035	30,000	75,000	12,209	3,052	4,884	3,906
0.500	0.049	30,000	75,000	18,284	4,571	7,313	5,304L
0.500	0.065	30,000	75,000	26,351	6,588	10,541	6,786
0.500	0.083	30,000	75,000	37,275	9,319	14,910	8,307
0.625	0.020	30,000	75,000	5,128	1,282	2,051	1,859
0.625	0.028	30,000	75,000	7,381	1,845	2,953	2,568
0.625	0.035	30,000	75,000	9,459	2,365	3,784	3,172
0.625	0.049	30,000	75,000	13,947	3,487	5,579	4,335
0.625	0.065	30,000	75,000	19,697	4,924	7,879	5,591
0.625	0.083	30,000	75,000	27,124	6,781	10,850	6,910
0.625	0.095	30,000	75,000	32,759	8,190	13,103	7,734
0.625	0.109	30,000	75,000	40,172	10,043	16,069	8,639
0.750	0.028	30,000	75,000	6,052	1,513	2,421	2,156
0.750	0.035	30,000	75,000	7,721	1,930	3,088	2,669
0.750	0.049	30,000	75,000	11,273	2,818	4,509	3,664
0.750	0.065	30,000	75,000	15,726	3,931	6,290	4,749
0.750	0.083	30,000	75,000	21,318	5,330	8,527	5,905
0.750	0.095	30,000	75,000	25,446	6,362	10,179	6,637
0.750	0.109	30,000	75,000	30,733	7,683	12,293	7,453
0.750	0.120	30,000	75,000	35,294	8,824	14,118	8,064
0.875	0.020	30,000	75,000	3,593	898	1,437	1,340
0.875	0.028	30,000	75,000	5,128	1,282	2,051	1,859
0.875	0.035	30,000	75,000	6,522	1,630	2,609	2,304L
0.875	0.049	30,000	75,000	9,459	2,365	3,784	3,172
0.875	0.065	30,000	75,000	13,087	3,272	5,235	4,126
0.875	0.083	30,000	75,000	17,560	4,390	7,024	5,152
0.875	0.095	30,000	75,000	20,803	5,201	8,321	5,807
0.875	0.109	30,000	75,000	24,886	6,221	9,954	6,543
0.875	0.120	30,000	75,000	28,346	7,087	11,339	7,100
1.000	0.028	30,000	75,000	4,449	1,112	1,780	1,633
1.000	0.035	30,000	75,000	5,645	1,411	2,258	2,027
1.000	0.049	30,000	75,000	8,149	2,037	3,259	2,796
1.000	0.065	30,000	75,000	11,207	2,802	4,483	3,647
1.000	0.083	30,000	75,000	14,928	3,732	5,971	4,567
1.000	0.095	30,000	75,000	17,593	4,398	7,037	5,159
1.000	0.109	30,000	75,000	20,908	5,227	8,363	5,827
1.000	0.120	30,000	75,000	23,684	5,921	9,474	6,336
1.000	0.134	30,000	75,000	27,459	6,865	10,984	6,963
1.250	0.035	30,000	75,000	4,449	1,112	1,780	1,633
1.250	0.049	30,000	75,000	6,380	1,595	2,552	2,260
1.250	0.065	30,000	75,000	8,705	2,176	3,482	2,958
1.250	0.083	30,000	75,000	11,485	2,871	4,594	3,719
1.250	0.095	30,000	75,000	13,443	3,361	5,377	4,213
1.250	0.109	30,000	75,000	15,843	3,961	6,337	4,776
1.250	0.120	30,000	75,000	17,822	4,455	7,129	5,207
1.250	0.134	30,000	75,000	20,468	5,117	8,187	5,742
1.500	0.035	30,000	75,000	3,671	918	1,469	1,367
1.500	0.049	30,000	75,000	5,243	1,311	2,097	1,896
1.500	0.065	30,000	75,000	7,117	1,779	2,847	2,487
1.500	0.083	30,000	75,000	9,333	2,333	3,733	3,136
1.500	0.095	30,000	75,000	10,878	2,719	4,351	3,559
1.500	0.109	30,000	75,000	12,754	3,188	5,101	4,043
1.500	0.120	30,000	75,000	14,286	3,571	5,714	4,416
1.500	0.134	30,000	75,000	16,315	4,079	6,526	4,881
1.500	0.148	30,000	75,000	18,439	4,610	7,375	5,336
1.750	0.035	30,000	75,000	3,125	781	1,250	1,176
1.750	0.049	30,000	75,000	3,864	966	1,546	1,434
1.750	0.065	30,000	75,000	6,019	1,505	2,407	2,146
1.750	0.083	30,000	75,000	7,860	1,965	3,144	2,711
1.750	0.095	30,000	75,000	9,135	2,284	3,654	3,080
1.750	0.109	30,000	75,000	10,672	2,668	4,213	3,504
1.750	0.120	30,000	75,000	11,921	2,980	4,768	3,832
1.750	0.134	30,000	75,000	13,563	3,391	5,425	4,242
1.750	0.148	30,000	75,000	15,268	3,817	6,107	4,645
1.750	0.165	30,000	75,000	17,430	4,357	6,972	5,124
2.000	0.035	30,000	75,000	2,720	680	1,088	1,032
2.000	0.049	30,000	75,000	3,864	966	1,546	1,434
2.000	0.065	30,000	75,000	5,214	1,303	2,086	1,887
2.000	0.083	30,000	75,000	6,788	1,697	2,715	2,387
2.000	0.095	30,000	75,000	7,873	1,968	3,149	2,715
2.000	0.109	30,000	75,000	9,175	2,294	3,670	3,092
2.000	0.120	30,000	75,000	10,227	2,557	4,091	3,384
2.000	0.134	30,000	75,000	11,605	2,901	4,642	3,751
2.000	0.148	30,000	75,000	13,028	3,257	5,211	4,111
2.000	0.165	30,000	75,000	14,820	3,705	5,928	4,542

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