Standard/Material

API5LGr.B,X42~X80;ASTMA252 Gr.2,Gr.3;ASTMA53 Gr.B

SY/T 5037-2000;SY/T5040-2000;GB/T3091-2008: Q235B,Q345B,20#,16Mn;

GB/T9711.1-1997;GB/T9711.2-1999: L245~L555;

EN10217-1,EN10219-1,EN10224 L235,L275,L355;

EN10025 S235JR,S235JO,S235J2,S275JR,S355JR,S355JO,S355J2,S355K2;

DIN 1629 ST37,ST42,ST52 etc

Out Diameter

168.3mm-2050mm

Wall Thickness

6mm-25mm according to the pressure.

To meet the requirements of internal design pressure, the pipe wall thickness is determined by using the following
formula:  t=PD/2S
Where:
t = design nominal wall thickness for the specified internal design pressures.
Thickness and weight tolerances for pipe shall be governed by the
requirements of the specification to which the plates or sheets are ordered (in. [mm])
P = internal design pressure (psi [kPa])—specified by the purchaser
D = outside diameter of the steel pipe cylinder (in. [mm])

S = design stress (psi [kPa]), not to exceed the purchaserspecified
percentage of the minimum yield point of the steel selected by the manufacturer .

Length

5.8m-20m,or as customer’s requirements.

Technique

SAW welding

Application

This standard covers the requirements for steel water pipe for use
in water transmission and distribution under normal circumstances. It is the responsibility of the purchaser for each project to determine if any unusual circumstances related to the project require additional provisions that are not included in the standard. Such special conditions might affect design, manufacture, quality control, corrosion protection, or handling requirements

Package

1.Bundle packing or in bulk,

2. Bevelled or plain ends as per buyer's request,

3. Marks: as per customer's request,

4. Surface treatment: with or without varnish/2PP/2PE/3PE/3PP/FBE coating,

5. Metal or plastic protecting caps at pipe ends

Delivery Time

about 20days after receipt of irrevocable L/C at sight or 30% deposite

inspection

by X-Ray or Ultrasonic flaw detecting; Water pressure inspection

testing

Mechanical properties analysis,Chemical composition testing