America

Germany

Japan

AISI

UNS

EN/DIN

JIS

304

S30400

1.4301

X5CrNi18-10

SUS304

304L

S30403

1.4307

X2CrNi19-11

SUS304L

316

S31600

1.4401

X5CrNiMo17-12-2

SUS316

316L

S31603

1.4404

X2CrNiMo17-12-2

SUS316L

Corrosion Test

Conducted only when specially requested by the client

Chemical Analysis

Test done as per required quality standards

Destructive / Mechanical Testing

Tensile | Hardness | Flattening | Flare | Flange

Reverse-bend and Re. flat tests

Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end

Eddy Current Testing

Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System

Hydrostatic Testing

100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .

Air Under Pressure Test

To check any evidence of air leakage

Visual Inspection

After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

Commodity Name

Corrugated Welded Stainless Steel Tubes

Standard

ASTM A249

Material Grade

 304 / 316L

Outer Diameter

6mm-50.8mm

Wall Thickness

0.3mm – 2.5mm

Length

Depends on Customers’ Request

Tolerance

According to Standards

Leakage Test

ET, RT,  UT  Or  Hydraulic Test Or Air Pressure Test Under Water

Main  process

Welding, Annealing, Pickled, Polish, Satin, 2B Mill Finish

Certificate

ISO 9001:2008, Manufacture License Of Pressure Tube

Marking

Brand, Standard, Grade, Size, Length and Heat No. Or Depends On Customer.

Packing

Bundles With Plastic Bags, Wooden Box With Angle Steel Frame Or others

Payment Terms

T/T, L/C at sight

Price Term

EX-Works, CFR, CNF, CIF, FOB ETC

Delivery Time

Generally 15Days – 45Days Or Depends on the quantity and Customers’ Request

Capacity

1000 Tons Per Month

Grade

Chemical Composition(%)

Remark

C≤

Mn≤

P≤

S≤

Si≤

Cr

Ni

Mo

N

Cu

304

0.08

2.00

0.045

0.030

0.75

18.0~20.0

8.0~10.50

0~0.1

304L

0.030

2.00

0.045

0.030

0.75

18.0~20.0

8.0~12.0

0~0.1

316

0.08

2.00

0.045

0.030

0.75

16.0~18.0

10.0~14.0

2.0~3.0

0~0.1

316L

0.030

2.00

0.045

0.030

0.75

16.0~18.0

10.0~14.0

2.0~3.0

0~0.1

1.ISO System

2.Manufacture License of Pressure Tube

3.Production experience about 20 years.

4.Raw Material are from POSCO,BAO STEEL,TISCO,CRUPP ETC

5.Market -More than 30 countries worldwide.

6.We have the most convenient transport from shanghai and timely delivery.

7.We offer competitive prices based on good quality.

8.We have high technical production line with top quality products.

9.We have win high reputation based on good quality.

A249 Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.

Materail:TP304, TP304L, TP304H, TP310S, TP316, TP316L, TP316Ti, TP316H, TP317L, TP321

Welding Method:TIG

Chemical Composition:Acc.to A249 and A480

Heat Treatment:Bright Annealing temperature 1040

Straightness:0.8mm/900mm

Tolerance:OD Acc.to A1016/A1016M, WT +/-10%

Mechanical Property:Tension Test, Flattening Test, Flange Test, Reverse-Bend Test, Hardness Test, Hydrostatic or Other Nondestructive Test, Grain Size, Reverse-Bend Test, Hardness Test

Intergranular Corrosion:Acc.to the Buyer's Requirements