27SiMn seamless cold drawn steel tube, with black annealed out surface

27SiMn seamless cold drawn steel tube, with black annealed out surface

Categories:Steel tubes

Model No.:27SiMn

Size range:

Cold drawn: OD6-2426mm. WT:1-40mm

Hot finished:32-1200mm;WT:3.5-200mm.

DETAIL INFORMATION

27SiMn seamless cold drawn steel tube, with black annealed out surface 

 

 

OVERVIEW

 

The material 27SiMn has high hardenability. 27SiMn teel’s toughness decreases not much as heat treatment, but material 27SiMn has very high strength and abrasion resistance, especially when water quench, grade 27SiMn still has high toughness. However 27SiMn steel is sensitivity to the white dots very much and 27SiMn is sensitivity to temper brittleness tendency and overheating when heat treatment.
27SiMn is mainly used under tempering condition and used in the manufacture of high toughness and wear resistance of hot stamping.27SiMn can also used under fire or hot rolling using supply condition, such as the tractor caterpillar pin, etc.

 

APPERANCE

 

Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface irregularities.

 

USAGE SCOPE

 

Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application

 

STANDARD SPECIFICATIONS

 

ProcessSeamless, cold drawn, honing tube
ShapeRound
Size Range

Cold Drawn: 6-426mm OD; 1-40mm WT

Hot Finished: 32-1200mm OD; 3.5-200mm WT

ThicknessUpto 200mm
Pipe EndPlain ends with square cuts, free of burrs, bevelled ends with plastic caps proteced.
SurfaceBare, varnished,oiled, or polised as request.
Length15 Mtr max Cut to Length available
Heat TreatmentSpheroidizing / Full Annealing / Process Annealing / Isothermal Annealing / Normalizing / Quenching / Martempering (Marquenching) / Quench And Tempering / Austempering
ApplicationOil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat Exchanger / Plumbing, HVAC & Firefighting / Structural / General Engineering / Railways / Sewage & Waterwell
Quality InspectionThird Party inspection is acceptable (SGS, BV etc.)
 

 

TOLERANCE FOR SEAMLESS TUBING

 

I.D tolerance (mm)O.D tolerance (mm)Straightness (mm)
H9-H12-/+0.5%0.20-0.80

 

 

CHEMICAL COMPOSITION

 

GradeCSiMnPS
27SiMn0.24-0.321.1-1.401.10-1.400.035 max0.035 max

 

 

DELIVERY CONDITIONS

 

+ARBKSGBKNBKQ+T
As rolledStress relievedAnnealedNormalizedQuenched+tempered
Hot rolled+SR+A+NQ+T

 

Delivery conditionCold finished (hard) (BK)Cold drawn and stress-relieved (BK+S)
Steel GradeTensile Strength (Mpa)Elongation (%)Tensile Strength (Mpa)Yield Strength (Mpa)Elongation (%)
27SiMn≥800≥5≥760≥610≥10


 

Our Services

 

What we can offer?

 

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.

 

 

Quality Assurance

 

Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET

  

Package

 

In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request

 


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Tel:86-21-35316960
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