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PIPE TYPE: OIL CASING, API 5CT CASING,API SPEC 5CT J55 K55 N80 L80 SEAMLESS STEEL OIL WELL CASING PIPE
OUTER DIAMATER(OD): 114.30MM-508MM
WALL THICKNESS(WT): 5.21MM-16.13MM
LENGTH: R1; R2; R3
GREAD: J55; K55; N80-Q; L80-1; L80-9CR; L80-13CR, C95, P10
STANDARD: API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q, API 5CT PSL1/PSL2 L80-1, L80-9CR,L80-13CR,C90, C95, P110, Q125
THREAD TYPES: STC;LTC;BTC;VAM TOP EQUIVALENT;NEW VAM EQUIVALENT;CS EQUIVALENT;HSC EQUIVALENT;NUE;EUE;LTC;XC
THREAD: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
APPLICATION: CASING PIPE IS WIDELY USED FOR FASTENING OIL AND GAS WELL WALL OR BOREHOLD, WITH BIGGER DIAMETER THAN TUBING, INCLUDING SURFACE CASINGS, TECHNICAL CASINGS AND OIL LAYER CASINGS.
pipe type: oil casing, api 5ct casing,api spec 5ct j55 k55 n80 l80 casing pipe;seamless steel oil well casing pipe
outer diamater(od):114.30mm-508mm
wall thickness(wt): 5.21mm-16.13mm
length: r1; r2; r3
gread:j55;k55;n80-q;l80-1;l80-9cr;l80-13cr,c95,p10
standard: api 5ct psl1/psl2 j55,k55,n80-1,n80-q, api 5ct psl1/psl2 l80-1, l80-9cr,l80-13cr,c90, c95, p110, q125
thread types: stc;ltc;btc;vam top equivalent;new vam equivalent;cs equivalent;hsc equivalent;nue;eue;ltc;xc
thread: nue, eue, vam, stc, ltc, btc, xc, vam top, new vam,hydrill cs
application: casing pipe is widely used for fastening oil and gas well wall or borehold, with bigger diameter than tubing, including surface casings, technical casings and oil layer casings.
production technology: plain pipe-end upsetting- austenite treatment-quenching-tempering-straightening-(non-destructive testing)- threading-thread inspection-coupling mpi-phosphating-coupling make up-drifting-hydrostatic testing-measuring&weight-marking&stenciling-coating-packing casing and tubing-transportation
vailable sizes
category: erw, hfw or smls
standards:h-40, j-55, k-55, c-75, l-80, n-80, c-95, as-95, p-110, l80-13cr
steel grade: h40, j55, k55, n80
connections
api 5ct is applicable to following connections which complied with api spec 5b:
• sc: short round thread casing
• lc: long ound thread casing
• bc: buttress thread casing
• nu: non-upset tubing
• eu: external upset tubing
Technical parameters of casing pipe:
Sizes |
OD |
Weight |
WT |
Type of end |
||||||||
|
|
|
|
H40 |
J55 |
M65 |
L80 |
N80 |
C90 |
P110 |
Q125 |
|
1 |
2 |
|
|
|
|
|
|
|
|
|
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
4-1/2 |
9.50 |
114.30 |
14.14 |
5.21 |
PS |
PS |
PS |
– |
– |
– |
– |
– |
5 |
11.50 |
127.00 |
17.11 |
5.59 |
– |
PS |
PS |
– |
– |
– |
– |
– |
Sizes |
OD |
Weight |
WT |
Type of end |
||||||||
H40 |
J55 |
M65 |
L80 |
N80 |
C90 |
P110 |
Q125 |
|||||
1 |
2 |
|||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
5-1/2 |
14.00 |
139.70 |
20.83 |
6.20 |
PS |
PS |
PS |
– |
– |
– |
– |
– |
6-5/8 |
20.00 |
168.28 |
29.76 |
7.32 |
PS |
PSLB |
PSLB |
– |
– |
– |
– |
– |
7 |
17.00 |
177.80 |
25.30 |
5.87 |
PS |
– |
– |
– |
– |
– |
– |
– |
7 |
38.00 |
177.80 |
56.55 |
13.72 |
– |
– |
– |
PLBE |
PLBE |
PLBE |
PLBE |
PLBE |
7-5/8 |
24.00 |
193.68 |
35.72 |
7.62 |
PS |
– |
– |
– |
– |
– |
– |
– |
7-3/4 |
46.10 |
196.85 |
68.60 |
15.11 |
– |
– |
– |
P |
P |
P |
P |
P |
8-5/8 |
24.00 |
219.08 |
35.72 |
6.71 |
– |
PS |
PS |
– |
– |
– |
– |
– |
9-5/8 |
32.30 |
244.48 |
48.07 |
7.92 |
PS |
– |
– |
– |
– |
– |
– |
– |
10-3/4 |
32.75 |
273.05 |
48.74 |
7.09 |
PS |
– |
– |
– |
– |
– |
– |
– |
10-3/4 |
73.20 |
273.05 |
108.93 |
17.07 |
– |
– |
– |
– |
– |
P |
– |
– |
11-3/4 |
42.00 |
298.45 |
62.50 |
8.46 |
PS |
– |
– |
– |
– |
– |
– |
– |
13-3/8 |
48.00 |
339.72 |
71.43 |
8.38 |
PS |
– |
– |
– |
– |
– |
– |
– |
16 |
65.00 |
406.40 |
96.73 |
9.53 |
PS |
– |
– |
– |
– |
– |
– |
– |
18-5/8 |
87.50 |
473.08 |
130.21 |
11.05 |
PS |
PSB |
PSB |
– |
– |
– |
– |
– |
20 |
94.00 |
508.00 |
139.89 |
11.13 |
PSL |
PSLB |
PSLB |
– |
– |
– |
– |
– |
Remarks: P——Plain end;S—Short round thread;L—Long round thread;B—Buttress thread;E—Extreme-line. |
Note: other premium connection shall be provided as per customer requirements.
chemical compositions of casing pipe
chemical compositions of casing pipe |
|||||||||||
standard |
grade |
chemical compositions(%) |
|||||||||
api spec 5ct |
j55 |
c |
si |
mn |
p |
s |
cr |
ni |
cu |
mo |
v |
k55 |
0.34~0.39 |
0.20~0.35 |
1.25~1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
/ |
/ |
|
n80 |
0.34~0.38 |
0.20~0.35 |
1.45~1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
/ |
/ |
/ |
0.11~0.16 |
|
l80 |
0.15~0.22 |
≤1.00 |
0.25~1.00 |
≤0.020 |
≤0.010 |
12.0~14.0 |
≤0.20 |
≤0.20 |
/ |
/ |
|
p110 |
0.26~0.395 |
0.17~0.37 |
0.40~0.70 |
≤0.020 |
≤0.010 |
0.80~1.10 |
≤0.20 |
≤0.20 |
0.15~0.25 |
≤0.08 |
mechanical properties of casing pipe
mechanical properties of casing pipe |
|||||||
grade |
type |
total elongation |
yield strength |
yield strength |
tensile strength |
hardness |
hardness |
under load |
(min)mpa |
(max)mpa |
min mpa |
max (hrc) |
max (hbw) |
||
(%) |
|
|
|
|
|
||
j55 |
- |
0.5 |
379 |
552 |
517 |
- |
- |
k55 |
- |
0.5 |
379 |
552 |
655 |
- |
- |
n80 |
1 |
0.5 |
552 |
758 |
689 |
- |
- |
n80 |
q |
0.5 |
552 |
758 |
689 |
- |
- |
l80 |
1 |
0.5 |
552 |
655 |
655 |
23 |
241 |
l80 |
9cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
l80 |
13cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
c90 |
- |
0.5 |
621 |
724 |
689 |
25.4 |
255 |
c95 |
- |
0.5 |
655 |
758 |
724 |
- |
- |
t95 |
- |
0.5 |
655 |
758 |
724 |
25.4 |
255 |
p110 |
- |
0.6 |
758 |
965 |
862 |
- |
- |
q125 |
all |
0.65 |
862 |
1034 |
931 |
- |
- |
casing pipe manufacturing process:
steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection
1. an annular heating furnace is required for ingot heating;
2. punching and reheating with hydraulic press;
3. the oil casing plant uses a two-roller guide plate extension machine for extension;
4. re-use a disc heating furnace for periodic rolling, and use a non-entry furnace for reheating, cooling, straightening, pipe cutting, and inspection.
Technical parameters of casing pipe:
Sizes |
OD |
Weight |
WT |
Type of end |
||||||||
|
|
|
|
H40 |
J55 |
M65 |
L80 |
N80 |
C90 |
P110 |
Q125 |
|
1 |
2 |
|
|
|
|
|
|
|
|
|
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
4-1/2 |
9.50 |
114.30 |
14.14 |
5.21 |
PS |
PS |
PS |
– |
– |
– |
– |
– |
5 |
11.50 |
127.00 |
17.11 |
5.59 |
– |
PS |
PS |
– |
– |
– |
– |
– |
Sizes |
OD |
Weight |
WT |
Type of end |
||||||||
H40 |
J55 |
M65 |
L80 |
N80 |
C90 |
P110 |
Q125 |
|||||
1 |
2 |
|||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
5-1/2 |
14.00 |
139.70 |
20.83 |
6.20 |
PS |
PS |
PS |
– |
– |
– |
– |
– |
6-5/8 |
20.00 |
168.28 |
29.76 |
7.32 |
PS |
PSLB |
PSLB |
– |
– |
– |
– |
– |
7 |
17.00 |
177.80 |
25.30 |
5.87 |
PS |
– |
– |
– |
– |
– |
– |
– |
7 |
38.00 |
177.80 |
56.55 |
13.72 |
– |
– |
– |
PLBE |
PLBE |
PLBE |
PLBE |
PLBE |
7-5/8 |
24.00 |
193.68 |
35.72 |
7.62 |
PS |
– |
– |
– |
– |
– |
– |
– |
7-3/4 |
46.10 |
196.85 |
68.60 |
15.11 |
– |
– |
– |
P |
P |
P |
P |
P |
8-5/8 |
24.00 |
219.08 |
35.72 |
6.71 |
– |
PS |
PS |
– |
– |
– |
– |
– |
9-5/8 |
32.30 |
244.48 |
48.07 |
7.92 |
PS |
– |
– |
– |
– |
– |
– |
– |
10-3/4 |
32.75 |
273.05 |
48.74 |
7.09 |
PS |
– |
– |
– |
– |
– |
– |
– |
10-3/4 |
73.20 |
273.05 |
108.93 |
17.07 |
– |
– |
– |
– |
– |
P |
– |
– |
11-3/4 |
42.00 |
298.45 |
62.50 |
8.46 |
PS |
– |
– |
– |
– |
– |
– |
– |
13-3/8 |
48.00 |
339.72 |
71.43 |
8.38 |
PS |
– |
– |
– |
– |
– |
– |
– |
16 |
65.00 |
406.40 |
96.73 |
9.53 |
PS |
– |
– |
– |
– |
– |
– |
– |
18-5/8 |
87.50 |
473.08 |
130.21 |
11.05 |
PS |
PSB |
PSB |
– |
– |
– |
– |
– |
20 |
94.00 |
508.00 |
139.89 |
11.13 |
PSL |
PSLB |
PSLB |
– |
– |
– |
– |
– |
Remarks: P——Plain end;S—Short round thread;L—Long round thread;B—Buttress thread;E—Extreme-line. |
Note: other premium connection shall be provided as per customer requirements.
chemical compositions of casing pipe
chemical compositions of casing pipe |
|||||||||||
standard |
grade |
chemical compositions(%) |
|||||||||
api spec 5ct |
j55 |
c |
si |
mn |
p |
s |
cr |
ni |
cu |
mo |
v |
k55 |
0.34~0.39 |
0.20~0.35 |
1.25~1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
/ |
/ |
|
n80 |
0.34~0.38 |
0.20~0.35 |
1.45~1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
/ |
/ |
/ |
0.11~0.16 |
|
l80 |
0.15~0.22 |
≤1.00 |
0.25~1.00 |
≤0.020 |
≤0.010 |
12.0~14.0 |
≤0.20 |
≤0.20 |
/ |
/ |
|
p110 |
0.26~0.395 |
0.17~0.37 |
0.40~0.70 |
≤0.020 |
≤0.010 |
0.80~1.10 |
≤0.20 |
≤0.20 |
0.15~0.25 |
≤0.08 |
mechanical properties of casing pipe
mechanical properties of casing pipe |
|||||||
grade |
type |
total elongation |
yield strength |
yield strength |
tensile strength |
hardness |
hardness |
under load |
(min)mpa |
(max)mpa |
min mpa |
max (hrc) |
max (hbw) |
||
(%) |
|
|
|
|
|
||
j55 |
- |
0.5 |
379 |
552 |
517 |
- |
- |
k55 |
- |
0.5 |
379 |
552 |
655 |
- |
- |
n80 |
1 |
0.5 |
552 |
758 |
689 |
- |
- |
n80 |
q |
0.5 |
552 |
758 |
689 |
- |
- |
l80 |
1 |
0.5 |
552 |
655 |
655 |
23 |
241 |
l80 |
9cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
l80 |
13cr |
0.5 |
552 |
655 |
655 |
23 |
241 |
c90 |
- |
0.5 |
621 |
724 |
689 |
25.4 |
255 |
c95 |
- |
0.5 |
655 |
758 |
724 |
- |
- |
t95 |
- |
0.5 |
655 |
758 |
724 |
25.4 |
255 |
p110 |
- |
0.6 |
758 |
965 |
862 |
- |
- |
q125 |
all |
0.65 |
862 |
1034 |
931 |
- |
- |
casing pipe manufacturing process:
steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection
1. an annular heating furnace is required for ingot heating;
2. punching and reheating with hydraulic press;
3. the oil casing plant uses a two-roller guide plate extension machine for extension;
4. re-use a disc heating furnace for periodic rolling, and use a non-entry furnace for reheating, cooling, straightening, pipe cutting, and inspection.