Couplings

GOST 632-80; Casing and couplings for them. Technical conditions	Grade: D, K, E, L, M, R
	Type of thread connection: casing triangular coupling, casing trapezoid leaktight
	Make: A, B
	Coupling size: Ø127,0mm, Ø141,3 mm, Ø153,7 mm, Ø166,0 mm, Ø187,7 mm, Ø194,5 mm, Ø215,9 mm, Ø244,5 mm, Ø269,9 mm
GOST 633-80; Tubing and couplings for them. Technical conditions	Grade: D, K, E, L, M
	Type of thread connection: round item 2.13 GOST 633-80
	Coupling size: Ø73,0mm, Ø77,8 mm, Ø88,9 mm, Ø93,2 mm, Ø108,0 mm, Ø114,3 mm, Ø120,6 mm, Ø127,0 mm, Ø132,1 mm, Ø141,3 mm
API Spec 5CT, 10th edition; Casing and tubing. Technical conditions	Grades: Н40; J55, K55, N80 type 1 and Q; L80 type 1; R95; С90; Т95; С110; Р110; Q125
	Thread type: plain, upset, casing with buttress thread and LC, tubing with a round thread
	Level of characteristics: PSL1, РSL2, PSL3
	Coupling size: Ø73,02 mm, Ø77,8 mm, Ø88,9 mm, Ø93,17 mm, Ø107,95 mm, Ø120,65 mm, Ø114,3 mm, Ø133,35 mm, Ø147,32 mm, 160,22 mm, Ø187,71 mm, Ø200,03 mm, Ø215,9 mm, Ø244,48 mm, Ø269,88 mm.
GOST 31446-2017; Steel casing and tubing for oil and gas industry	Grades: Н40; J55; К72; М65; L80 type 1; N80 types 1 and Q; C90 type 1 and 2, Т95 type 1 and 2; С95, P110, Q135
	Type of ends finishing: NU and tubing with rounded triangle thread, EU and tubing with rounded triangle thread. Couplings for casing - plain, with buttress thread, LC, SC, casing triangular coupling, casing trapezoid leaktightness
	Level of characteristics: PSL1, РSL2, PSL3
Technical conditions 1308-006-96380705-2009; Seamless tubing and hydrogen-sulphidous cold-resistant couplings for them	Steel grade 30F, 25HMFA. Grade Ks. Es. Ls
	Types of ends finishing: with plain ends and with upset ends
	Tubing
	Diameter	Wall thickness, mm	Length, m
			make A	make B
	Ø 60	5	10±0,5	5,5-8,5/8,5-10
	Ø 73	5,5; 7,0	«	«
	Ø 89	6,5	«	«
	Ø 102	6,5	«	«
	Ø 114	7	«