Annealing Pickling Welded Stainless Steel Tubes

• Type: Welded
• Technique: TIG
• Material: Stainless Steel
• Surface Treatment: Ba
• Usage: Boiler Pipe
• Section Shape: Round
• Model NO.: DSP-021
• Standard: ASTM A269
• 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 - 304 mm
• Trademark: Dingshang
• Origin: China
• HS Code: 7306400000
• Production Capacity: 7000 Ton/Year

Product Description

Annealing Pickling Welded Stainless Steel Tubes

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

Annealing Pickling Welded Stainless Steel Tubes
 

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 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)

 

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



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

Certificates

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.

Annealing Pickling Welded Stainless Steel Tubes