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C68700 Cold Drawn Stainless Steel U Bends 0.5mm Wall Thickness

Spezilla is really a professional supplier, they always give us technical advice and provide good quality tubes with very competitive price!

—— Thomas Hoover - United States

Good quality, fast delivery, Spezilla has been supplying heat exchanger tubes for our projects since 2008, we really appreciate your support!

—— Massimiliano Rossi - Italy

Spezilla supports our group very well, and now we are approved supplier of goverment, they are reliable and flexible! Spezilla always answers!

—— Jaime Arias - Argentina

Very competitive price and the tubes are well polished, we are very satisfied with Spezilla from our cooperation since year 2010.

—— Nathalie Gulli - Mexico

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C68700 Cold Drawn Stainless Steel U Bends 0.5mm Wall Thickness

China C68700 Cold Drawn Stainless Steel U Bends 0.5mm Wall Thickness supplier

Large Image :  C68700 Cold Drawn Stainless Steel U Bends 0.5mm Wall Thickness

Product Details:

Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008
Model Number: ASME SB111

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: WOODEN BOXED
Delivery Time: WITHIN 30 DAYS
Payment Terms: T/T, L/C
Supply Ability: 100 TONS / MONTH
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Detailed Product Description
Tube Shape: U Tube Manufacturing: Cold Drawn/Seamless
Materials No.: C68700 OD: 1/2'' - 2''
WT: 0.035'' - 0.083'' Surface: SOLUTION ANNEALED
High Light:

C68700 steel u bend


Cold Drawn stainless u bends


C68700 stainless u bends

C68700 Aluminum Brass Seamless Tube U Bend Tube Heat Exchanger


This specification covers U-bend seamless condenser, evaporator, and heat exchanger tubes of copper and copper alloys up to 2 in., inclusive, in diameter. Tubes for this application are normally made from the following copper or copper alloys:


Copper Alloy Tube----Aluminum Brass Tube
Aluminum Brass Tube is a copper zinc alloy containing aluminum and small amount of arseric which is added as an inhibitor against dezincification. Inhibited Aluminum Brass resists the action of high velocity salt and brackish water and is commonly used for condenser tube.
The outstanding characteristic of Aluminum Brass is th high resistance to impringement attack.
Aluminum Brass tubes are highly accepted and one of the extensively used material for various industrial applications.

Product Range
• Outside diameter : 5.0 mm(min) ~ 65 mm(max)
• Wall thickness : 0.5mm(Min.)
• Length : 27,000mm(Max.)
• Product capacity per month : 500 M.T.
• U-bend tube (smallest bending radius ≥ 2 x tube O.D.)
Application :
Steam Ejector, Intor and After Condensers, Grand steam condensers, Feed Water Evaporators for Petrochemical, Ship-building, Power plants and Desalination plants etc.
Chemical composition

Standard Class Chemical composion(%) Related standards
Cu Zn Pb Fe P Sn Ni Mn Al As Other KS JIS ASTM BS DIN
ASTM 1 76.0-79.0 Rem. 0.07 Max. 0.06 Max.         1.8-2.5 0.02-0.10   D5301 C6870 H3300 C6870 B111 C68700 2871 CZ110 1785 CuZn20Al
2 76.0-79.0 Rem. 0.05 Max. 0.05 Max.         1.8-2.5 0.02-0.06 Si 0.2-0.5 C6871 C6871 C68700 2871 CZ110 CuZn20Al
3 76.0-79.0 Rem. 0.07 Max. 0.06 Max.     0.20 - 1.0 0.20-Max. 1.8-2.5 0.02-0.06 Cr0.10 Max. C6872 C6872 C68700 2871 CZ110 CuZn20Al

Mechanical properties

Standard Temper Designation Tensile test Hardness test
Outside diameter(mm) Thickness (mm) Tensile strength min ksi Elongation in 2in., min% Yield strength min ksi Rockwell hardness
ASTM O61 C68700 5-50 0.8-0.10 50 - 18 - -
JIS O61 C6871T-O 50-250 0.8-0.10 36Min. 40Min. 13Min. - -
C6872T-O, C687TS-O 50-250 0.8-0.10 36Min. 40Min. 13Min. -



Additional Testing

  • Dye penetrant of 'U' bend area
  • PMI testing
  • Heat Treatment

Heat Treatment

We are equipped to carry out heat treatment of bends plus a minimum 150mm of leg.
Heat Treatment Equipment

  • Heat treatment equipment is computer controlled with the added facility of data recording.
  • An argon protective atmopshere is used inside stainless and special alloy tubes during heat treatment.
  • We can provide all types of annealing; solution annealing and stress relieving.

Chemical Composition

Element Weight %
Cu 77.5
Zn 20.5
Al 2.0
As 0.1


Materials - U-Bent Tube
Carbon Steel SA 179 / A 179
Carbon Steel SA 210 / A 210
Carbon Steel SA 334 / A 334
Stainless Steel SA 213 / A 213
  SA249 / A249
  SA268 / A268
  SA688 / A688
Duplex Stainless Steel SA 789 / A 789
Copper & Cu Alloys SB 111 / B 111
Titanium & Ti Alloys SB 338 / B 338
For different materials please contact our sales department.

Mechanical Properties

Physical Properties  Conditions
T (°C) Treatment 
Density (×1000 kg/m3) 8.8-8.94 25  
Poisson's Ratio 0.34 25  
Elastic Modulus (GPa) 117 25  
 Tensile Strength (Mpa) 414 25 Tube
Yield Strength(Mpa) 186
Elongation (%) 55
Reduction in Area (%)  

C68700 Cold Drawn Stainless Steel U Bends 0.5mm Wall Thickness

Contact Details
Spezilla Tube Co., Ltd.

Contact Person: Will Ma

Tel: +8613918539222

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