Double wall steel pipe welding, welded steel pipe, steel welded pipe

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  • >=5000
    US $0.15
Supply Ability:
9000000 Meter/Meters per Month
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Quick Details
ASTM, ASTM A 254-1997
ASTM A254-1997
Grade Group:
0.70 - 1.00 mm
Section Shape:
Outer Diameter(Round):
4.76 - 12.7 mm
Place of Origin:
China (Mainland)
Secondary Or Not:
Oil Pipe
Cold Rolled
Surface Treatment:
Special Pipe:
Thick Wall Pipe
Alloy Or Not:
Is Alloy
6-30M or long roll , any length you want is ok
Double wall steel pipe welding, welded steel pipe, steel welded pipe
Copper-Brazed Steel Tubing
copper coated ,galanized white zinc coated,, yellow zinc coated, PVC
brake system, cooler system
plastic dust cap
Packaging & Delivery
Packaging Details
45x45x45 packed in plasctic bags in to cartons or polywood carton
Delivery Time

Double wall steel pipe welding, welded steel pipe, steel welded pipe

Detail imagine



  • Main Characteristics:                                                     
  • 1.Fine inside cleanness ,high strength and nice elongation                              
  • 2.Good fundation for after-process,anti-leakage.                             
  • 3.Anti-high pressure explosion and excellent anti-corrosion properly after surface treatment.                              
  • The tubes can be provided in coils or cut-to length with any length according to the                                  
  • requirements from customers                            
  • 4. The tube is used for auto braking system and power steering system and so on                                 
O.D(mm)Thickness(mm)Min Burst Pressure(Mpa)Elongationinside clearness(g/ m³)O.B(Mpa)O.S(Mpa)


   ≥25         ≤0.16    ≥290    ≥180
4.760.70        110  ≥25         ≤0.16    ≥290    ≥180
6.000.70        85  ≥25         ≤0.16    ≥290    ≥180
6.350.70        78  ≥25         ≤0.16    ≥290    ≥180
8.000.70        67.5  ≥25         ≤0.16    ≥290    ≥180
10.000.70        55   ≥25  ≤0.16≥290≥180
12.000.70        32  ≥25         ≤0.16    ≥290    ≥180

Plated surface treatment :

Color Zinc PlatingOilve GreenWhite zinc PVF
Tensile strength≥290Mpa≥290Mpa≥290Mpa≥290Mpa
Yield Strength≥180Mpa≥180Mpa≥180Mpa≥180Mpa
Salt spray Test:192h216h144h1000h

Packaging & Shipping


QDGY common package:  PVC bag in carton box with QDGY logo

Welcomed special package request,single packing,tasteful degined package are ok.Only little cost of special package.


Lead time:                              

For fitting:  common fitting within 30 days;special fitting within 40 days.

For brake hose:  wihithin 20 days.

For brake hose assembly:  within 40 days.

Please noted:  Exact lead time is based on details order ,please contact with us for the details information.


Qingdao port(Chingtao port) is only about 30 minitues from our factory.

Qingdao airport is only about 40 minitues .

Conveniently by air or by ocean with cheaper freight fee.


Related Products

 Relate Product :                                






Testing Euipment

Testing Equipment & Test report:                          

Burst Pressure test Machine,Hot & Cold test machine,Tensile test machine,Valumeteric expansion test machine ,Slat Spray test machine,Flex whip test machine.... We supply whole SAE J1401  brake  hose Test process ,and stricly high quality control system promote us to go to futher bright future,if you want high quality and reasonable price ,find us,we will satisfy you.

Company Information

---Company Information---                 

    Qingdao Guosong Machinery Parts Co.,Ltd first began brake hose & fitting & assembly operations in China in 1996.The premier OEM's rely on the service ,quality and performance of the brake hose assemblies.QDGY has the capability to design and provide complete validation testing to the customers requirements.

    We offer the most comprehensive assortment of brake hoses and PA and plating coated steel line in the industry. In addition, we offer a complete line of fittings and unions to complete the job.

    QDGY factory is the professional manufacturer of rubber brake hose,stainless steel braided teflon brake hose,all kinds of fitting,brake hose assembly,bundy tube,and all kinds of accessory.
Welcome to visit our




    QDGY factory is the professional manufacturer of rubber brake hose,stainless steel braided teflon brake hose,all kinds of fitting,brake hose assembly,bundy tube,and all kinds of accessory.

SAE J1401 brake hose:

3.2x10.5mm rubber brake hose

4.8x12.5mm DOT approved brake hose

Teflon brake hose:

3.2x7.5mm -3AN teflon braid brake hose

3.2x6.5mm stainless steel braid brake line

4.8x8.0mm -4AN teflon brake line

Steel tube:

3/16" steel pipe

1/4" bundy pipe

3/8" bundy tube

5/16" steel tube..single wall bundy tube

OE No. rubber brake hose assembly,Teflon brake line kits,bundy tube assembly


Rubber accessory,steel accessory,plasitc accessory.

How to Contact Us:                                                                                                                      

Sales Manager : Rita He
Qingdao Guosong Machinery Parts Co.,Ltd
#16-1-301 Huada Mansion,No.6 Yaner Dao RD,266071,Qingdao China
Tel: +86-532-85779141 Fax: +86-532-85760225
Cell Phone: +86-15066792971

MSN: qdgy_rita(at) Skype: qdgyrita
alibaba website:

QDGY is resourceful for brake hose,brake hose fittings and banjo bolts and nuts ! welcome you to visit our company website or Alibaba homepage !

Welcome to visit our


                  ----FAQ--- -----   FAQ   -----                                  

Q1:  Waht kinds of main rubber hose can product?

 A:   Rubber brake hose,EPDM brake hose,Hydraulic brake hose,Hydraulic hose,water hose,fuel& oil hose,Brake hose,Stem hose,SAE J1401 brake hose,DOT 1/8" brake hose,stainless steel braided brake hose,teflon brake hose,teflon s.s braided brake hose,OE No. brake hose,Flexible brake hose,Performance competition brake hose...

Q2:  What size of brake hose can you supply?

  A:   common size: 3.2x10.5mm(1/8");4.8x12.5mm(3/16")

        Special size: 3.2x11mm...or your request size

Q3:  Can you print the words(line) as our requirement?

  A:   Yes,we do provide embossed and printing marking with different color ,as your requirement.

Q4:  What kinds of fitting can product?

  A:   All kinds.Female fitting,male fitting,banjo fitting,adepter brake hose fitting,bolts and nuts,steel with zinc ,chrome,nickle...stainless steel,brass...

Q5:  How many types of brake hose do you product?

  A:  Brake hose,Teflon braided brake hose,PTFE stainless steel braided brake line,Steel tube,Bundy tube,Steel tube assembly,Brake hose assembly...

Q6:  What is my order's delivery date?

   A:  It usually takes 5-40 days,which generally depends on your order quantity and our storage.Details information ,kindly please feel free to contact with us,or visit our website,we will reply you within 24 hours.