Mechanical tubing of STKM11, STKM12, STKM13, STKM 20

Specification Details:

1)  STKM11, STKM12, STKM13, STKM 20 Chemical Component Analysis(%):

       STKM11:  C: <0.12;  Si: <0.35; Mn: <0.60;  P: <0.040;  S: <0.040;
       STKM12:  C: <0.20;  Si: <0.35; Mn: <0.60;  P: <0.040;  S: <0.040;
       STKM13:  C: <0.25;  Si: <0.35; Mn: 0.30 -0.90;  P: <0.040;  S: <0.040;
       STKM20:  C: <0.25;  Si: <0.55; Mn: <1.60;  P: <0.040;  S: <0.040; Nb & V <0.15

2) Monthly Capacity: 6000 tons.

3) Mechanical Properties:

   STKM11: Ultimate Strength: > 290 Mpa;  Elongation:  > 35%;
   STKM12: Ultimate Strength: > 340 Mpa; Yield Strength:  >175Mpa;  Elongation:  > 35%;
   STKM13: Ultimate Strength: > 370 Mpa; Yield Strength:  >215Mpa;  Elongation:  > 30%;
   STKM20: Ultimate Strength: > 540 Mpa; Yield Strength:  >390Mpa;  Elongation:  > 23%;

3) Delivery Condition: Annealed(A), Bright Annealing, Normalized(N), Stress Relief Or Finish Anneal(SR), Quenched and Tempered(Q+T), etc;

4) Surface treatment: JIS G3445-Temporary Coating, Special Coating, Galvanized, immersion oil, lacquer, passivation, phosphating,etc; Or Oil-dip paint black with two plastic caps on each end

5)  Inspection: Strictly according to the standard requirements and offer the original MTC (EN10204.3.1/3.1B)

6) Relevant Test: JIS G3445--Chemical Component Analysis,Mechanical Properties(Ultimate tensile strength,Yield strength,Elongation),Technics Properties(Flattening Test,Flaring Test,Bending Test,Hardness Test,Blow Test,etc), Exterior Size Inspection, Nondestructive electric Test,Hydrostatic Test,  magnetic particle testing;

4) Marking: All tubes are eddy current tested and are marked with size, cast number and specification. Or as per customer's requirement;

6)  Packing: Hexagonal bundles with several steel strips, Wrapped in waterproof paper, PVC sleeve,and sackcloth with several steel strips or packed in heavy tri-wall boxes, wooden boxes, wooden slats as requires;

7) Packing Type: Round , Square, Rectangle, Hexagon.  Streamline, etc;

9) Applications:  Automobile and Bearing Industry, Mechanical and Structral Purpose, Hydraulic and Petrochemical Purpose, etc.

8) Place of orgin: China

Commercial Information:
  1) Delicery time: (45-60) days ready at mil also according to the actual weightl ; 
  2) Minium order : 5 Ton while no stock raw material;
  4) Term of payment     :  T/T Or Irrepealable L/C at sight;
  5) Delivery Port              :  Shanghai Port ;
  6) Offer Validity              :  5-7 Days        ;
  7) Container                   :  20GP or 40GP or Bulk ;
  8) Manufacture methods  :  Cold Finished method or hot finished Method.