Threaded Casing with Short/Long Round Thread or Buttress

Threaded Casing and Supply supplies new and used steel casing pipe, piling pipe, surplus pipe, and used steel pipe.

Threaded Casing with Short/Long Round Thread or Buttress
Standard: API Spec 5 CT
Dimensions:
O.D. (mm) Weight T&C W.T. Steel grade
Lb/ft Kg/m mm H40 J55 K55 N80 L80 C95 P110
4 1/2 114,3 9,5 14,2 5,21 S S S - - - -
    10,5 15,6 5,69 - S;B S;B - - - -
    11,6 17,3 6,35 - S;L;B S;L;B L;B L;B L;B L;B
  13,5 20,1 7,37 - - - L;B L;B L;B L;B
    15,1 22,5 8,56 - - - - - - -
5 127 11,5 17,1 5,59 - S S - - - -
  13 19,4 6,43 - S;L;B S;L;B - - - -
    15 22,3 7,52 - S;L;B S;L;B L;B L;B L;B L;B
    18 26,8 9,19 - - - L;B L;B L;B L;B
    21,4 31,9 11,1 - - - L;B L;B L;B L;B
    23,2 34,6 12,14 - - - L;B L;B L;B L;B
    24,1 35,9 12,7 - - - L;B L;B L;B L;B
5 1/2 139,7 14 20,9 6,2 S S S - - - -
    15,5 23,1 6,98 - S;L;B S;L;B - - - -
    17 25,3 7,72 - S;L;B S;L;B L;B L;B L;B L;B
    20 29,8 9,17 - - - L;B L;B L;B L;B
    23 34,3 10,54 - - - L;B L;B L;B L;B
6 5/8 168,3 20 29,8 7,32 S S;L S;L - - - -
    24 35,7 8,94 - S;L S;L - - - -
where:
S = Short Round Thread
L = Long Round Thread
B = Buttress Thread
Weight per unit calculation formula:
w = (O.D. - W.T.) x W.T. x 0.0246615 (kg/m)
w = (O.D. - W.T.) x W.T. x 10.68 (lb/ft)
Steel Requirements:
Steel grade Chemical requirements Mechanical requirements
C Mn Ni Cu P S Si Tensile strength Yield strength Elongation A min.
max. max. max. max. max. max. max.
(%) (%) (%) (%) (%) (%) (%) N/mm2 N/mm2 (%)
H40 - - - - 0,03 0,03 - min. 414 276-552 calculation
J55 - - - - 0,03 0,03 - min. 517 379-552 according
K55 - - - - 0,03 0,03 - min. 655 379-553 to the wall
N80 - - - - 0,03 0,03 - min. 689 552-758 thickness
L80 0,43 1,9 0,25 0,35 0,03 0,03 0,45 min. 655 552-655  
C95 0,45 1,9 - - 0,03 0,03 0,45 min. 724 655-758  
P110 - - - - 0,03 0,03 - min. 724 655-758  
Note:

LENGTHS

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MARKING

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