Our China Zhonghai Steel Pipe Manufacturing Corporation is producing A53 Black Steel Pipe/A53 Black Pipe/A53 Black Pipe Mill/black steel pipe/API black steel pipes/API hot rolled black steel pipe/a53 black steel pipes/a 53 black steel pipe manufacture,welcome u and u team come to visit at any time.

1.Black Steel pipe
2.It is used for conveying water, petroleum, gas and other common fluids and common building structures.
3.Steel: GR.A, GR.B
4.Size: 1/2"-36"*Sch20, Sch40, Sch60, Sch80, Sch100, Sch120, Sch160, XXS
5.Length: 5M-12M random length or 6m fixed,or 11.8m fixed.Cut tollerance +-10mm.
6.Loading:5.8 meters for 20' container, 6 meters to 12 meters for 40' container 
7.Packing:
 Hexagonal bundles of max. 2,000kg with 6 steel strips bundles, black paint coating,beveld ends or plain.Caps both ends.
8.Delivery tollerance:+-10%,or +-8% or +-5%of total quantity and amount.
9.Black Steel pipe test:Chemical Component Analysis,Mechanical Properties(Ultimate tensile strength,Yield strength,Elongation),Technics Properties(Flattening Test,Bending Test,Hardness Test,strike Test,etc), Exterior Size Inspection, Nondestructive Test,Hydrostatic Test.
10.Heat treatment: BK, BKS, GBK, NBK,Stress Relief, Normalizing, Spheroidize Anneal, Annealing, Bright Annealing, Normalized, Quenched and Tempered, Solution Annealing, etc.
11.Delivery: FOB / CFR / CIF
12.Delivery port:China Main Port
13.Payment: TT 30% or 30% prepayment balance by Irrevocable LC at sight.
14. ISO Certificate,offer Material test cetificate EN10204.1B,third party inspection SGS,BV,TUV etc.
15.Shipment: prompt
16.OEM (cutings,hot gavanised,thread ends etc.)


If you have any interest, please don't hesitate to contact us. I am Vanessa here for you