China Butt Weld Fittings manufacturer


TOBO International Trading(Shanghia)Co.,Ltd       Tianda Oil Pipe Co., Ltd

TOBO Pipeline Equipment Co.,Ltd        TPCO & TISCO Pipe(Tianjin)Co.,Ltd.                        


January 7, 2022

Round Seamless Alloy Steel Pipe A335 P9 Black 3'' SCH40 Plain End

Round Seamless Alloy Steel Pipe A335 P9 Black 3'' SCH40 Plain End


Product Description


Size : 1/4''-48''




Shape: Round




Steel pipes High quality ASTM/API 5L Seamless carbon steel pipes
Size Size 1/4” to 24” Outside Diameter 13.7 mm to 609.6 mm
Standard API5L , ASTM A106 Gr.B, ASTM A53 Gr.B, ASTM A179/A192/A213/A210 /370 WP91, WP11,WP22 GB5310-2009, GB3087-2008,GB6479-2013, GB9948-2013, GB/T8163-2008, GB8162-2008,GB/T17396-2009
Certificates API5L ISO 9001:2008 TUV SGS BV etc
Wall thickness SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100 SCH120, SCH160, XS, XXS
Material Carbon steel, Low carbon steel, Mild steel.
Packaging Loose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps
Surface Treatment Carbon steel seamless pipes :Rust-proof black painting
Marking Standard marking, or according to your request. Marking Method: Spray white paint
End treatment Under 2 inch plain end. 2 inch and above Beveled.
Pipe Length

Single Random Length and double Random Length.

SRL:3M-5.8M DRL:10-11.8M or As clients requested length

Delivery Time 10-40 days
Payment Term TT, LC at sight, etc.
Usage/Application 1. Fluid pipe
2. Power Plant
3. Structure pipe
4. High and low pressure Boiler tube
5. Seamless steel tubes for petroleum cracking
6. Conduit pipe
7. Scaffolding pipe pharmaceutical and ship building etc.
Main Market Asia, Middle East, Europe, America, Africa, Australia, etc.



An Alloy Steel Pipe is used in applications which require moderate corrosion resistance properties with good durability

and at an economical cost. To simply put it, alloy pipes are preferred in those areas where carbon steel pipes may fail.

There are two classes of alloy steels - high alloys and low alloy steels. Pipes that constitute low alloy steels have an alloying

content that ranges below 5%. Whereas the alloying content of a high alloy steel would range between 5% to about 50%.

Similar to most alloys the working pressure ability of an Alloy Steel Seamless Pipe is about 20% higher than a welded pipe.

So in applications that have a higher working pressure as a prerequisite, the use of a seamless pipe is justified. Though stronger

than a welded pipe, the cost is much higher. Furthermore, the risk of intergranular corrosion at the heat affected weld zone is more

in a welded product. The visible difference between an Alloy Steel Welded Pipe and a seamless product is the latitudinal seam along

the length of the pipe. However, today, with the advancement in technology, the seam present on the Alloy Steel ERW Pipe could

considerably be reduced via means of a surface treatment, such that it remains invisible to human eyes.



​Packing Details : Regular shipping packaging or depends on customer's requirement


Delivery Details : 7-30 days after the PO


Round Seamless Alloy Steel Pipe A335 P9 Black 3'' SCH40 Plain End 0


Contact Details