API 5CT N80-1 Seamless Oilfield Casing Pipes/Carbon Seamless Steel Pipe/Oil Well Drilling Csaing Steel Pipes China Manufacturer

Description

 API 5ct N80 casing Tubing is a API 5CT Oil casing Pipe & mainly used for oil well drilling. it is available as short Thread type and long thread type supplied with their couplings.

According to American petroleum Institute standard api spec 5ct, the steel grade of API 5CT oil casing pipe can be divided into ten types, including H-40, J-55, K-55, N-80, C-75, L-80, C-90, C-95, P-110 and Q-125. We supply the casing pipe & api 5ct J55 Casing Tubing accompanied with thread and coupling, or we offer our product in accordance with the following forms for option.

API 5CT N80 Casing Tubing Type of Casing：

• • short round thread casing(SC)
  • long round thread casing(LC)
  • buttress thread casing(BC)

  API 5CT N80 Casing Tubing Mechanical Properties:

  Tensile and Hardness Requirements
  Grade			Yield Strength MPa		Tensile Strength	Hardness a,c		Specified Wall thickness	Allowable Hardness Variation b
  	Type	Total Elongation Under Load			min MPa	max
  			min	max		HRC	HBW	mm	HRC
  1	2	3	4	5	6	7	8	9	10
  H40	—	0.5	276	552	414	—	—	—	—
  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	—	—	—	—
  R95	—	0.5	655	758	724	—	—	—	—
  L80 L80	1	0.5	552	655	655	23	241	—	—
  L80	9Cr 13Cr	0.5	552	655	655	23	241	—	—
  		0.5	552	655	655	23	241	—	—
  C90	1	0.5	621	724	689	25.4	255	£12.70	3
  								12.71 to 19.04	4
  								19.05 to 25.39	5
  								³ 25.40	6
  T95	1	0.5	655	758	724	25.4	255	£12.70	3
  								12.71 to 19.04	4
  								19.05 to 25.39	5
  								³ 25.40	6
  C110	—	0.7	758	828	793	30	286	£12.70	3
  								12.71 to 19.04	4
  								19.05 to 25.39	5
  								³ 25.40	6
  P110	—	0.6	758	965	862	—	—	—	—
  Q125	1	0.65	862	1034	931	b	—	£12.70	3
  								12.71 to 19.04 19.05	4
  									5
  a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
  b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9.
  c For through-wall hardness tests of grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.

   

  API 5CT N80 Casing Tubing Range Lengths
  	Range 1	Range 2	Range 3
  CASING (PE/T and C/SF)
  Total range length, inclusive Permissible variation, max a	4.88 to 7.62 1.83	7.62 to 10.36	10.36 to 14.63 1.83
  		1.52
  TUBING AND CASING USED AS TUBING
  (PE/T and C/SF)
  Total range length, inclusive Permissible variation, max a	6.10 to 7.32 b	8.53 to 9.75 c	11.58 to 12.80 d
  	0.61	0.61	0.61
  INTEGRAL TUBING connectionS (including IJ/PE
  and IJ/SF)
  Total range length, inclusive Permissible variation, max a	6.10 to 7.92 e	8.53 to 10.36	11.58 to 13.72 0.61
  	0.61	0.61
  PUP JOINTS	Lengths: 0.61; 0.91; 1.22; 1.83; 2.44; 3.05 and 3.66 e
  	Tolerance: ±0.076
  a Length variation applies to rail car shipment to the point of use and does not apply to order items of less than 18,144 kg of pipe.
  b By agreement between purchaser and Manufacturer, the maximum length may be increased to 8.57 m.
  c By agreement between purchaser and manufacturer, the maximum length may be increased to 10.76 m.
  d By agreement between purchaser and manufacturer, the maximum length may be increased to 17.72 m.0.61 m pup joints may be furnished up to 0.91 m long by agreement between purchaser and manufacturer, and lengths other than those listed may be furnished by agreement between purchaser and manufacturer.