ASTM A249 304 304L 316L 321/ASME SA249 TP304 TP304L Tp316 Tp316L Tp321 Welded Stainless Steel Tube for Heat Exchanger

• Type: Welded
• Technique: TIG
• Material: Stainless Steel
• Surface Treatment: Ba
• Usage: Boiler Pipe
• Section Shape: Round
• Model NO.: 6 - 219.1 mm
• Standard: ASTM A249/ASME SA249
• Stainless Steel: 304, 304L, 316, 316L, 321, 316ti
• Welding: TIG
• Surface Condition: Ba, Annealing Pickling, Polishing
• Application: Boiler, Superheater, Heat Exchanger, or Condenser
• Transport Package: Wooden Box
• Specification: 6 - 114.3 mm
• Trademark: Dingshang
• Origin: China
• HS Code: 7306400000
• Production Capacity: 7000 Ton/Year

Product Description

ASTM A249 304 304L 316L 321/ASME SA249 TP304 TP304L TP316 TP316L TP321 Welded Stainless Steel Tube for Heat Exchanger

ASTM A249 / A249M Covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels listed in standard, with various grades intended for such use as boiler, superheater, heat exchanger, or condenser tubes.

ASTM A249 / A249M ASME SA249 tubing sizes and thicknesses usually furnished to this specification are 1⁄8 in. [3.2 mm] in inside diameter to 12 in. [304.8 mm] in outside diameter and 0.015 to 0.320 in. [0.4 to 8.1 mm], inclusive, in wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of ASTM A249.

ISO9001:2015 and PED 2014/68/EU certified manufacturer
 

ASTM A249 / A249M 
TIG Welded Stainless Steel Tube
Boiler Tube, heat exchanger tube, condenser tube
Bright Annealing Tube
U Bending Tubes

Product Description
 

Material	Stainless Steel 304/304L/316L
Shape	Round Tubes
Production Standards	ASTM A270, ASTM A269, ASTM A249, ASTM A778, ASTM A789, DIN 11850, EN 10357, EN 10217-7 and so on.
Outer Diameter	16mm - 2000mm ;
Thickness	0.8mm - 20 mm ;
Length	6 Meters - 20 Meters ; As customers' request ;
Tolerance	According to the Standard , +/-10% Commonly ;
Surface Treatment	Annealing pickling, Bright Annealed, Polishing finish
Application	Petrochemical Industry ; Chemical Fertilizer Industry ; Oil Refining Industry ; Oil And Gas Industry ; Light Industry And Food Industry ; Pulp And Paper Industry ; Energy And Environmental Industries .
Test	Flaring test ; Flattening test ; Bending Test ; Hydraulic Test ; Eddy Current test
Design	OEM / ODM / Customized
Certificate	ISO9001 ; ISO14001; PED.

 
Stainless Steel Heat Exchanger Tube Tolerances
 

Stainless Steel Heat Exchanger Tube Tolerances
Standard	OD(mm)	WT(mm)	Length(meters)	Grade
ASTM A249, ASTM A269,  EN 10217-7	15.88 to 114.3	0.3 to 4.0	Up to 18.3 meter	1.4301, 1.4306, 1.4404,  AISI 304/304l/316l,  S31803/S32205, etc
Standard	Outside Diameter		Thickness	Length
ASTM A249 (A1016)	<25.4	±0.10	±10%S	OD<50.8+3-0 OD≥50.8+5-0
	≥25.4~<38.1	±0.15
	≥38.1~<50.8	±0.20
	≥50.8~<63.5	±0.25
	≥63.5~<76.2	±0.31
ASTM A269 (A1016)	<38.1	±0.13	OD<12.7±15%  OD≥12.7±10%	OD<38.1+3.2-0 OD≥38.1+4.8-0

Factory Workshop & Production Lines



Quality and Tests



Certificates


Stainless Steel Grades

200series:201,202, etc
300series:301,302,303,304,304L,309,309s,310,310S,316,316L,316Ti,317L,321,347
400series:409,409L,410,420,430,431,439,440,441,444
Others:2205,2507,2906,330,660,630,631,17-4ph,17-7ph, S318039 904L,etc
Duplex stainless steel:S22053,S25073,S22253,S31803,S32205,S32304
Special Stainless Steel:904L,347/347H,317/317L,316Ti,254Mo

304/304L/316L Stainless Steel chemical composition and Mechnical properties

Chemical Composition	Tensile Strength	Yield Strength	Elongation	Hardness HRB
Grade 304 Stainless Steel (100% & MPA)
C≤0.08, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤10.5, 18≤Cr≤20	≥515	≥205	≥40	≤92
Grade 304L Stainless Steel (100% & MPA)
C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤12, 18≤Cr≤20	≥485	≥170	≥40	≤92
Grade 316L Stainless Steel (100% & MPA)
C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 10≤Ni≤14, 16≤Cr≤18	≥485	≥170	≥40	≤95

Stainless Steel Mechanical Properties:
 

Stainless Steel Mechanical Properties
Grade		Tensile Strength	Yide Strength	Elogation	Hardness	Solution Annealing
		kgf/mm²(N/mm²)	kgf/mm²(N/mm²)	%	HRB(HV)	ºC
ASTM	TP 304	≥53 (515)	≥21 (205)	≥35	≤90 (200)	1040ºC-1150ºC  Water Quenching
	TP 304L	≥50 (485)	≥17 (170)
	TP 316	≥53 (515)	≥21 (205)
	TP 316L	≥50 (485)	≥17 (170)
JIS	SUS 304	≥53 (520)	≥21 (205)			1010ºC-1150ºC  Water Quenching
	SUS 304L	≥49 (480)	≥18 (175)
	SUS 316	≥53 (520)	≥21 (205)
	SUS 316L	≥49 (480)	≥18 (175)
GB	06Cr19Ni10	≥53 (520)	≥21 (210)			1010ºC-1150ºC  Water Quenching
	022Cr19Ni10	≥49 (480)	≥18 (180)
	06Cr17Ni12Mo2	≥53 (520)	≥21 (210)
	022Cr17Ni12Mo2	≥59 (480)	≥18 (180)
EN	1.4301	(500-700)	≥20 (195)	≥40		1000ºC-1100ºC  Water Quenching
	1.4307	(470-670)	≥18 (180)
	1.4401	(510-710)	≥21 (205)			1020ºC-1120ºC  Water Quenching
	1.4404	(490-690)	≥19 (195)

Company Introduction

Huzhou Dingshang stainless steel Co., Ltd. is located in Huzhou city Zhejiang province, about one hour to Jiangsu, Shanghai and Hangzhou.

DINGSHANG is professional 

China Stainless Steel Pipe Manufacturer and Stainless Steel Tube Suppliers

, the company is specializing in industrial stainless steel welded tube and special alloys tube, with annual production capacity up to 7,000 tons.

The tubes are produced to conform to GB, ASTM/ASME, JIS, DIN, EN, GOST and ISO standards.



Some special requirements from clients can al so be met.Due to excellent technicians, advanced production equipment, satisfactory inspection and testing equipment and perfect quality as surance system,

DINGSHANG has got quality management system ISO9001, EU pressure equipment directive PED and AD2000 all issued by th e Lloyd's, and also Chinese national special equipment manufacturing license (TS certificate).

DINGSHANG upholds the business philosophy of improvement, trustworthiness and co-win. Based on reliable quality tubes and prompt reply, DINGSHANG's materials have been sold nationwide and exported to more than 20 countries including main economies around the world.

ASTM A249 304 304L 316L 321 Welded Stainless Steel Tube for Heat Exchanger
ASME SA249 TP304 TP304L TP316 TP316L TP321 Welded Stainless Steel Tube for Heat Exchanger