for tube clamp connectors

GN 990 Construction tubings

d1 Diameter D Ø 10 ÷ 30: ±0,1 Ø 32 ÷ 40: ±0,15 Ø 42 ÷ 50: ±0,2 Ø 55 ÷ 60: ±0,25 ST	AL	NI	s1 Square V ST	AL	NI	Length l ±0,5	d2	s2	w1	w2
D 10	D 10	D 10	-	V10	-	-	7	-	1,5	1,5
D 12	D 12	D 12	-	V12	-	-	9	-	1,5	1,5
D 14	D 14	D 14	-	-	-	-	11	-	1,5	-
D 15	D 15	D 15	-	-	-	-	12	-	1,5	-
D 16	D 16	D 16	-	V16	-	lieferbar	13	-	1,5	1,5
D 18	D 18	D 18	-	-	-	sind alle Längen	15	-	1,5	-
D 20	D 20	D 20	V20	V20	V20	in 1 mm Stufen	16	16	2	2
D 25	D 25	D 25	V25	V25	V25	max. Länge 3000 mm	21	21	2	2
D 30	D 30	D 30	V30	V30	V30	-	26	26	2	2
D 32	D 32	D 32	-	-	-	-	28	-	2	-
D 35	D 35	D 35	V35	V35	-	-	31	-	2	-
D 40	D 40	D 40	V40	V40	V40	-	34	34	3	3
D 42	D 42	-	-	-	-	-	36	-	3	-
D 45	D 42	-	V45	V45	V45	-	39	39	3	3
D 48	D 48	-	-	-	-	-	42	-	3	-
D 50	D 50	D 50	V50	V50	V50	-	44	44	3	3
D 55	-	-	-	-	-	-	47	-	4	-
D 60	D 60	D 60	-	-	-	-	47	-	4	-

Specification

Steel ST

zinc plated ZB

blue anodized

Aluminium AL

blank BL

untreated

anodized natural colour EL

natural colour

Stainless Steel NI

German material no. 1.4301

blank BL

untreated

Sawed cross sections deburred blank, i.e. not surface treated

Stainless Steel characteristics

Information

Construction tubings GN 990 can be supplied in any length up to 3000 mm.

The tolerances specified for the outside diameter of the round construction tubings comply with the requirements for split mono-block connector clamps. Otherwise the tolerances comply with DIN 2391, DIN 2395 and DIN 2462.

Two-piece connector clamps allow obviously larger tolerances on round and square construction tubings.

Tube end plugs GN 991 (for construction tubings GN 990)

Insert bushes GN 348
(Plastic, with internal thread)

Threaded tube inserts, round GN 992 (for construction tubings GN 990)