1.Normal Material:45# Carton teel 2.Size: Dia.12-50mm 3.Surface: Black surface , not easy to rust.

Normal packing: Cartons and Pallet.

Delivery time: According to quantity..

Dimension of coupler:

Steel bar Dia.  (mm)	Out Dia. of Coupler(mm)	Length of Coupler(mm)	Pitch(mm)
12	22	45	2.0
16	25	50	2.0
20	30	60	2.5
25	36	80	2.5
28	40	90	2.5
32	45	100	2.5
36	50	110	2.5
40	55	120	2.5
50	75	150	3.0

This kind of taper thread coupler can link steel bar Dia. from 12mm to500mm.

It satisfy with Chinese standard JGJ107-2010,JG171-2005; American standard ACI318-2008 etc

taper thread rebar splicing coupler