Send Message
Contact Us

Contact Person : Richard SHEN

Phone Number : +86-13736164628

WhatsApp : +8613736164628

Free call

Annealed / Pickled Stainless Steel Seamless Pipe , Astm A688 Welded Steel Pipe

Minimum Order Quantity : 1000kg Price : negotiable
Packaging Details : In bundles in wooden box Delivery Time : 3-4 weeks
Payment Terms : L/C, D/A, D/P, T/T, Western Union Supply Ability : 5000tons per year
Place of Origin: China Brand Name: Torich
Certification: ISO9001 Model Number: ASTM A688

Detail Information

Standard: SA790 Grade: 0Cr18Ni9
Production: Cold Drawn Delivery Condition: Pickled And Annealed
Application: Boiler And Heat Exchanger Type: Straight And U Bend
High Light:

stainless tube steel


large diameter stainless steel tube

Product Description

ASTM A688 Annealed and Pickled Welded Stainless Steel Tube For Feedwater Heater
Seamless Stainless Steel tubes For Boiler and Heat Exchanger, are made according to the Chinese National Standard GB13296-91.
GB13296-91 is a standard applicable for Seamless Stainless Steel pipes which is used for boiler and heat exchanger.
GB13296-1991 Seamless Stainless Steel Tubes for Boiler, Heat Exchangers
0Cr18Ni9 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
Technical tandard: GB13296-91
Tolerance for seamless stainless boiler tube:

Production MethodSize(mm)Tolerance
Hot Rolling(Extrusion)OD≤140±1.25%
Cold Drawn(Cold Rolled)OD8~30±0.20mm





The length or general steel tube:
Hot Rolling(Extrusion) tube: 3~12 m
Cold Drawn(Cold Rolled) tube: 3~8 m
The length for water pipe & boiler steel pipe:
Hot Rolling(Extrusion) tube: 4~12 m
Cold Drawn(Cold Rolled) tube: 4~8 m

Bending tolerance:
WT≤15mm, Bending≤1.5mm/m
WT>15mm, Bending≤2.0mm/m
End shape:
Both ends of the pipe should be cut at right angles, and remove burrs
Mechanical property
Heat treatment of longitudinal mechanical properties of steel pipe shall according to the standard.


Tensile strength MPa

Yield Strength MPa




For the tubes which W.T. ≥2 mm, Rockwell hardness tests should be taken.
Tests of the seamless boiler tubes:
1.Bending Test:
The tubes should take the bending test when OD ≤22mm. The bending angle is 90 degrees, and the bending radius is 6 times the outer diameter of the steel tube.
2. Hydraulic test;
Eddy current testing, ultrasonic testing can be used instead of hydraulic tests. When eddy current testing, GB/T 7735-1995 Gr. A should be followed; when ultrasonic testing, GB/T 5777-1996 Gr. C8 should be followed.
3. Flattening test
4. Flanging test
5. Expand test
 Annealed / Pickled Stainless Steel Seamless Pipe , Astm A688 Welded Steel Pipe 0Annealed / Pickled Stainless Steel Seamless Pipe , Astm A688 Welded Steel Pipe 1
 Annealed / Pickled Stainless Steel Seamless Pipe , Astm A688 Welded Steel Pipe 2
Annealed / Pickled Stainless Steel Seamless Pipe , Astm A688 Welded Steel Pipe 3
What is your Guarantee?
1.SO9001:2008 and TS16949 certification, SGS, BV, TUV or other third party inspection is available.
2.High quality with competitive price.
3.Advanced technology, experienced engineer, ISO quality system for quality assurance and traceability.
Do you have agent or distributor in our country?
1.We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.
How is your production capability?
1.2000 tons monthly production capacity, 5000 tons monthly trading capability
2.Prompt and Timely shipment
How to get the sample?
1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users, etc
How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays. Quotations would be sent upon technical details confirmed by customer!
Any more questions about your doubts, please feel free to send us your emails or call!

You Might Be Into These
Get in touch with us

Enter Your Message