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Quick Details

  • Standard: API, ASTM, DIN, GB, JIS
  • Standard2: API 5CT, API 5DP, ANSI A182-2001, ANSI A312-2001, ANSI B36.10M-2004, ASME B36.19M-1985, ASTM A179-1990, DIN 2444, GB 13296-2007, GB 18248-2000, GB 5310-1995, GB/T 12771-2000, GB/T 3639-2000, JIS C8305-1999, JIS G3444-2006
  • Grade Group: 10#-45#, 10Cr9Mo1VNb, 10MoWVNb, 15NiCuMoNb5, 16Mn, A53-A369, API J55-API P110, Mn-V alloy, Mo, Q195-Q345, ST35-ST52, STB35-STB42, STPG42
  • Grade: 10#, 45#, 10Cr9Mo1VNb, 10MoWVNb, 15NiCuMoNb5, 16Mn, A106(B,C), A335 P5, API J55, 15MnV, 15Mo3, Q195, ST37.4, STB42, STPG42
  • Thickness: 2 - 12 mm, 2 - 12 mm
  • Section Shape: Round
  • Outer Diameter(Round): 32 - 630 mm
  • Place of Origin: Shandong, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Technique: Hot Rolled
  • Certification: API
  • Surface Treatment: galvanized,or as requirement
  • Special Pipe: API Pipe
  • Alloy Or Not: Non-alloy
  • Application: Construction,oil,natural/coal gas,water and some solid materials.Etc.
  • Brand name: topensea
  • Type: seamless pipe
  • Shape: round steel pipe
  • Pipe Alloy Or Not: Non-alloy
  • Delivery Time: 10-45days
  • FOB price: US $ 600 - 1000 / Metric Ton
  • factory or trading: factory
  • Outer Diameter: 32 - 630 mm

Packaging & Delivery

Packaging Details in bulk in bundles plastic outside in bundles as customer's request.
Delivery Time 10-45 days

Brand new hot rolled seamless steel pipe with MTC certificate

mechanical properties st52 steel tube Standard: BS,JIS,GB,ASME,ANSI,DIN

Grade:API J55,API K55,API L80,API P110
Out Diameter:2 3/8"-20"
Thickness:lb/ft 9.5-7.2
Length:R1,R2,R3 rectangular steel pipe
FOB Price/MT:USD500--800



















seamless steel pipe  


API 5L, ASME, ASTM B36, JIS, DIN, GB8162, GB8163, GB5310,etc.

Out Diameter


Wall Thickness



ASTM A106 GRB/ A53 GRB/ API 5L X42,X52,X60,X65,X70GRB/ 

API 5 CT/ Q345/ ST42/ST37/ ST52.Q195/Q215/Q235/A179etc.


12m,11.8m,6m,5.8m,or as customers required

Surface treatment

Black painting, black varnish, transparent oil, hot galvanized, 

3PE,epoxy coating,BE,PE.etc.


Seamless & welded


 1.  Low and middle pressure fluid transportation pipeline

 2.  Casing Tube

 3.  Boiler Pipe

 4.  Petroleunm and natural gas industry

 5.  Chemistry industry

 6.  Electric industry


 1.  Bundle packing.

 2.  Bevelled end or plain end or warnished as per buyer's required.

 3.  Marking: as per customer's requests.

 4.  Painting varnish coating on the pipe.

 5.  Plastic caps at ends.


 1.  seamless steel pipe

 2.  ERW steel pipe

 3.  steel casing

 4.  tubing

 5.  hot-rolled steel pipe

 6.  spiral steel pipe

 7.  hot-galvanized steel pipe

Min Order Quantity

According to customer's requirement

Payment terms

L/C, T/T, Western Union,etc.


If you have any questions, please feel free to contact me.

Our company, Beijing TOPENSEA International Trade Co., Ltd. , located in Beijing, China.
Holding on one mill and three warehouses as well as 600 employees, our company is focusing on the various wire rod, Plate,
steel tubes/pipes manufacture and stocks such as structural pipe, hot rolled wire rod, seamless tube, fluid pipe,
petroleum casing pipe, line pipe, middle and low-pressure boiler tube, hydrostatic pressure supporting tube, cylinder pipe, automobile semi-axis tube, geology piling pipe including heat treatment pipes and cold draw pipes wiht annual capacity 300,000 tons.
Our mill has got the ISO 9001:2000 quality system certificate in 2008 and our tube/pipe products have obtained authority to
use official API Monogram from American Petroleum Institute. Not only to manufacture, stcok and export these tubes/pipes of our mill, also we have a very tight relation with Chinese famous special steel plant and tube/pipe mills such as HBIS, TPCO, DAYE Special Steel, Hubei Xinyegang Steel Pipe, Hengyang Valin steel tube Co., Ltd, Chengde Pipe, Xingcheng Special Steel and so on. By means of the closed biz relation, we can obtain a domestic sale price and materials with the original MTC from these famous Chinese steel plants. So, for your purchase order,
we can supply the reasonable offer, lower than their export offer from those Chinese mills, with the same high quality under your standards or specifications such as API 5L, API 5CT, API 5D, ASTM A519, BS4449, ST37-2, SAE1006, SAE1008,EN 10210, EN10297, EN 10216, EN 10294 etc..


Alice li

Marketing Director

Beijing Topensea International Co., Ltd

T: 86-10-61245788

Mob: 86-15075232817

Skype: alice01241007




TOPENSEA... Supplying the best... with the best

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