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ST52 Seamless Steel Pipe

ST52 seamless steel pipe

ST52 seamless steel pipe is a long strip of steel with a hollow section and no joints around it. It is widely used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials.

Application of ST52 seamless steel pipe
Compared with solid steel such as round steel, ST52 seamless steel pipe has lighter weight when the bending and torsion strength is the same. It is a kind of economical section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes and automobile transmission Axes, bicycle frames and steel scaffolding used in building construction, etc.

The use of steel pipes to manufacture ring-shaped parts can increase the utilization rate of materials, simplify the manufacturing process, and save materials and processing man-hours, such as rolling bearing rings, jack sleeves, etc., which have been widely used for manufacturing at present.

Production process of cold-rolled ST52 seamless steel pipe

The production process of cold-rolled ST52 seamless steel pipe is: round tube blank → heating → piercing → heading → annealing → pickling → oiling → multi-pass cold drawing → blank tube → heat treatment → straightening → hydraulic test → marking → entering Library

The rolling method of cold-rolled ST52 seamless steel pipe is more complicated than that of hot rolling. The first three steps of their production process are basically the same. The difference starts from the fourth step. After the round tube blank is emptied, it needs to be headed and annealed. After annealing, use a special acid liquid for pickling. After pickling, apply oil. Then it is followed by multiple passes of cold drawing and re-blanking, and special heat treatment. After heat treatment, it will be straightened. After straightening, the steel pipe is sent to the metal flaw detector by the conveyor belt for internal flaw detection. If there are cracks, bubbles, etc. inside the steel pipe, it will be detected. ST52 steel pipes must pass strict manual selection after quality inspection. After the quality inspection of the ST52 steel pipe, paint the serial number, specification, production batch number, etc. with paint, and hoist it into the warehouse by a crane.


Chemical Composition of ST 52 Steel Seamless Pipe

CSiPSMn
≤0.20≤0.550.0350.035≤1.50


Mechanical Properties of ST52 Seamless Pipe

GradeThicknessYieldTensilmieElongationImpact Energy(KV J) min
  St 52mmMin MpaMpaMin  %-20°+20°
≤ 16355490-63022404755
16> to ≤35355490-63022404755
35> to ≤50345490-63022404755
50> to ≤70325490-63022404755
70> to ≤100315470-61021404755
100> to ≤150295450-59021404755

Seamless Seel pipe

Type

Seamless Seel pipe

Wall Thickness

1 - 200 mm

Length

1---12M , according to customers' requirements

Outer Diameter

16 - 1020mm

Material

A53 , A283 , A106-A , A179-C , A214-C , A192 , A226 , A315 , A106-B , A178 , A210Q195 , Q235 , Q275 , 10# , 15#20# , 45# 20GSTPG38 , STS38 , STB , 30 , STS42 , STB42STB35ST33 , ST37 , ST35.8 , ST42 , ST45-8 , ST52

Standard

API 5L, EN-10208-1/2, GB9711.1/2, ISO, BS1387, ASTM A53, GB 3091

Heat Treatment

Annealed; Quenched; Tempered

Surface treatment

Rust remove, black painting,Galvanized, antirust oil, varnish, 3PE,

Certification:

ISO, SGS,BV,Mill Certificate

Technique

Hot Rolled Or Cold Rolle

Surface

Bare , Varnished , Zinc coating , Anti-corrosion , 3PE , PE/PP/EP/FBE . etc

Application

For oil pipe , line pipe in petroleum and natural gas , structure pipe , water and gas , also for chemical industry

price terms

FOB,CRF,CIF,EXW  all acceptable

Packaging Details

standard export packing ( inside : water proof paper , outside : steel covered with strips and pallets ) Hexagon Shape Bundle , Covered With Tarpaulin , Containers Or In Bulk

Factory Display

Other Types

ce certification sch40 seamless steel pipe ce certification astm 519 seamless steel pipe
ce certification seamless carbon steel pipe ce certification astm a106 grade b seamless steel pipe
ce certification seamless steel pipe ce certification astm a106 seamless steel pipe
ce certification seamless steel pipe api 5l ce certification astm a53 seamless steel pipe
ce certification seamless steel pipe line pipe ce certification carbon seamless steel pipe
ce certification seamless steel pipe st37 ce certification carbon steel seamless pipe
ce certification seamless steel pipes ce certification cold drawn seamless steel pipe
ce certification steel pipe seamless ce certification sch 40 seamless steel pipe

Application Field

Oil & Gas
Oil & Gas
Chemical Industry
Chemical Industry
Marine Engineering
Marine Engineering
Construction Industry
Construction Industry
Power Generation
Power Generation
Machinery industry
Machinery industry