전조식 그루브 방식

전조식은 파이프를 깎아 내지 않는 방식 으로 25A ~ 600A까지 다양한 사이즈군 의 전조가능한 그루빙기계가 있습니다.
적용관종 ‒ 강관SPP. S/40 S TS 10S, 20S, 40S

Nominal pipe Diameter	Pipe outer Diameter			The size from pipe end to groove edge A ±0.76	Groove width B ±0.76	Groove diameter C		Groove diameter D (참조용)	Minimum thickness of the pipe sall T	Outer diameter of the maximum extension surface
Nominal pipe Diameter	Actual size	Tolerance		The size from pipe end to groove edge A ±0.76	Groove width B ±0.76	Actual size	Tolerance	Groove diameter D (참조용)	Minimum thickness of the pipe sall T	Outer diameter of the maximum extension surface
25	33.7	+0.41	-0.68	15.88	7.14	30.23	-0.38	1.60	1.8	34.5
32	42.4	+0.50	-0.60	15.88	7.14	38.99	-0.38	1.60	1.8	43.3
40	48.3	+0.44	-0.52	15.88	7.14	45.09	-0.38	1.60	1.8	49.4
50	60.3	+0.61	-0.61	15.88	8.74	57.15	-0.38	1.60	1.8	62.2
65	76.1	+0.76	-0.76	15.88	8.74	72.26	-0.46	1.98	2.3	77.7
80	88.9	+0.89	-0.79	15.88	8.74	84.94	-0.46	1.98	2.3	90.6
100	114.3	+1.14	-0.79	15.88	8.74	110.08	-0.51	2.11	2.3	116.2
125	139.7	+1.40	-0.79	15.88	8.74	135.48	-0.51	2.11	2.9	141.7
150	165.1	+1.60	-0.79	15.88	8.74	160.90	-0.56	2.16	2.9	167.1
200	216.3	+1.60	-0.79	19.05	11.91	211.60	-0.64	2.34	2.9	220.7
250	267.4	+1.60	-0.79	19.05	11.91	262.60	-0.69	2.39	3.6	271.8
300	318.5	+1.60	-0.79	19.05	11.91	312.90	-0.76	2.77	4.0	322.8

(주)대현