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Quick Details

  • Standard: ASTM, BS, DIN, GB, JIS, ASTM A106-2006, ASTM A210-1996, BS 1139, BS 1387, BS EN10296, DIN 1626, DIN 1629/3, GB 5310-1995, GB 9948-2006, GB/T 3090-2000, GB/T 3094-2000, GB/T 9711.1-1997, JIS G3445-2006, JIS G3455-2005, JIS G3463-2006
  • Grade: 10#-45#, 16Mn, Mo, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, 15Mo3, 16Mo, Q195, Q215, Q235, Q345, St35.8, St37, St42, St45, St52
  • Thickness: 6 - 25 mm
  • Section Shape: Square
  • Outer Diameter: 10*10mm-600*600mm
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary, Non-secondary
  • Application: Structure Pipe
  • Technique: ERW
  • Certification: CE
  • Surface Treatment: Black Painted
  • Special Pipe: Thick Wall Pipe, Thick Wall Pipe
  • Alloy Or Not: Non-alloy
  • section shape: round
  • Technique:: ERW
  • Place of Origin:: TianjinChina (Mainland
  • Application:: Structure Pipe
  • finish: galvanized,printing oil,acid wash
  • Quality: high
  • Brand: ZT
  • Usage: decorations,Industry,Strucature,Car

Packaging & Delivery

Packaging Details seaworthy or as customer request
Black rectengular steel tube pipe Q195/Q235/Q345
Delivery Time within 20-25 days

,Spirial steel pipe
(1)Standard: GB, DIN, API
(2)Standard: GB/T9711, DIN 1626, API 5L
(3)Grade: 10#-45#, 16Mn, Q195-Q345 

Quick Details
Standard: GB, JIS,ASTM,APIStandard: GB/T9711, DIN 1626, API 5LGrade: 10#-45#, 16Mn, Q195-Q345
Grade: 10#, 20#, 45#, 16Mn, Q235, Q345, Q195Thickness: 6 - 25 mmSection Shape: Round,Square,Rectangular

Outer Diameter: 219 - 3000 mm


Place of Origin:  Tianjin  China (Mainland)Secondary Or Not: Non-secondary
Application: structure ,fluided pipeTechnique: weldedCertification: API
Surface Treatment: Black PaintedSpecial Pipe: API PipeAlloy Or Not: Non-alloy
Colour: BlackOD: 1/2"-24"Thuickness:verious
Effect: Good
Packaging & Delivery
Packaging Detail:International standard packing
Delivery Detail:15-20days

1.Product Name:black square rectangular steel pipe
5.High Quality


Standard: BS, GB, ASTMStandard: BS 1387, BS EN10219, BS EN10217, GB/T...Grade: Q195-Q345
Grade: Q235, Q345, Q195, Q215Thickness: 0.6 - 12 mmSection Shape: Round,square,rectangular
Outer Diameter: 21 - 219 mmPlace of Origin: Tianjin China (Mainland)Secondary Or Not: Non-secondary
Application: Structure PipeTechnique: ERWCertification: CE
Surface Treatment: GalvanizedSpecial Pipe: Thick Wall PipeAlloy Or Not: Non-alloy
Welding Line Type: ERWBrand Name: ZhaoDa
Packaging & Delivery
Packaging Detail:1)Big OD :in bulk 2)SmallOD:straped by steel strips into bundles, also packed in waterproof woven bags. 3)According to the requirement of the customers.
Delivery Detail:15--20days

Steel Pipe
2) W.T: 0.8~ 12mm
3) Spec.: Q195, Q215, Q235,
4) Standards: ASTM-A53A, BS1387-1985


Steel Pipe

(Black colored, galvanized)



Round pipe


Square pipe


Rectangular pipe

Outer diameter




Wall thickness





2m--5.8m/6m/12m and RANDOM LENGTH


ASTM A53,BS1387-85,GB/T3091-08,DIN2440,JIS-G3444,EN10255

Zinc coating

Pre galvanized steel pipe: 60-150g/m2;

Hot dipped galvanized steel pipe: 200-400g/m2

End finish

Plain/ beveled ends or threaded with sockets/coupling and plastic caps.


Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Low

pressure fluid pipe for water oil or gas, Boiler pipe.


With hydraulic testing, eddy current and infrared test


In bundles, packed in woven bag; in loose; or request.

Delivery time

with in 25 days

Payment Terms

T/T or L/C and so on


1:Special design available according to requirement.

2:Pipe can be necked dowm, punching hole on pipe wall.

3:Pipe fittings, elbows are available.

4.All production process are under the ISO9001:2000 strictly.



Our company has advanced technology and a talented team. We comply with ISO9001:2000 Quality Management System in the process of producing high-quality products and providing the basic guarantee.

Any queations ,please contact with me!


our factory





Looking fordward our long terms business relation.Pls contect with us.

I am Anna Zhang.My skype annazhang001


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China (Mainland) | Manufacturer, Trading Company
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