Seamless Low-Carbon Steel Heat-exchanger tubes/condenser tubes/boiler tubes/

Seamless Cold Drawn Steel Pipes/U-Bending tubes/U-Tubes/Bending tubes

The steel tubes produced by cold drawn process according to the Norm of ASTM A179/A179M

ASME SA179/SA179M mainly used for Heat-exchanger,boiler,condenser,superheater etc.

1.This specification covers minimum-wall-thickness,seamless cold-drawn low-carbon steel tubes for tubular
heat exchangers, condensers tubes, and similar heat transfer apparatus.
2.This specification SA179/A179 covers seamless tubes 1⁄8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter.

3.The referenced Documents : A450/A450M Specification for General Requirements for Carbon, Ferritic Alloy, and

Austenitic Alloy Steel Tubes

4.Seamless tubes shall be made by the seamless process and shall be cold drawn tubes.
5.Heat-treatment of Steel tubes shall be heat treated after the final cold draw pass at a temperature of 1200°F [650°C] or higher.

6.Surface of cold drawn steel tubes:Finished tubes shall be free of scale. A slight amount of oxidation will not be considered as scale.

7.Hardness:The tubes shall have a hardness number not exceeding 72 HRB.

8.Mechanical Tests Required:

1) Flattening Test—One flattening test shall be made on specimens from each of two tubes from each lot (Note 2) or fraction thereof.
2) Flaring Test—One flaring test shall be made on specimens from each of two tubes from each lot (Note 2) or fraction thereof.
3) Flange Test—When specified as a substitute for the flaring test, for tubes having a wall thickness (actual mean wall) less than 10 %

of the outside diameter, one test shall be made on specimens from each of two tubes from each lot (Note2) or fraction thereof. For tubes

other than specified above, the flange test shall not be required.
The Chemical Composition:

Normal Stock Size of Heat-exchanger tubes:

9.Low carbon Steel U-tubes/U-bending tubes/Bending tubes Pictures:

Tags: U-tubes;U-bending tubes;U tubes;heat-exchanger tubes;bending tubes;condenser tubes;
Low carbon Steel;SA179,A179,

Zhejiang New Era Steel Tube Technology Co., Ltd is one of the best seamless steel tube products manufacturer and exporter in china. Our main products include cold drawn and cold rolled seamless steel tubes .We can manufacture non-standard and special application tubes, also according to the international standards as well. Ningbo Pipeway Trade Co.,Ltd is our branch company for all internation business service for our company.

Our Production equipments including 16 cold drawing lines and 22 cold rolled machines:

We have full testing equipments for different kinds of testing for steel tubes:

Our products can produced as DIN,ASTM,ASME,EN,JIS,BS,GB,GOST,ISO etc international standard 

Precision steel tubes:DIN2391 st52/A519 4130 4140 1026/EN10305-1 E355+N/EN10305-4 E235+N

Boiler steel tubes:ASTM A192/A179/A210 Gr.A/A213;DIN17175 st35.8/EN10216

Seamless Mechanical tubes: ASTM A519, EN10297-1/EN10210 S355J2H

Wire line Drill Rods:BQ,NQ,HQ,PQ XJY750,XJY850 4130+SR 1541

Oil and Gas line pipes:API 5L Grade B,A106 Gr.B,A53 Gr.B,API 5D

Stainless Steel tubes 304,304L,316,316L

Steel pipes and tube Size range:OD 4-300mm,Wt:0.5-30mm

We have 15 years experience of exporting steel tubes and steel pipes , main exporting to American, Europe, Asian, Australia, Africa .

We have cerficate of ISO9001,TS16949,TUV/PED for different market demand: