T-Thread Self Drilling Hollow Bar

Tthread self drilling hollow bar.

T thread is designed and produced according to T International Standard, and the rod anchor types are: T30, T40, T52, T73, T76, T103. T thread makes itself good bond to the accessories or rotary drill rigs. Its high strength makes it widely used in deep foundation, slope stabilization, tunnel, mine or other geological disaster areas.

If the rib height increases or the number of ribs per unit length increases, the relative rib area increases. The rib area fR is used as a parameter for the bonding quality of T thread anchor bolts, and the optimal value is fR = 0.21 – fR = 0.33.

T – Threaded Hollow Bars

Thread Profile: All thread, commonly referred to as fully threaded, continuously threaded. The T Thread is according to international standard. It is an alternative to Titan IBO drilling bars for CTS system.

Steel Material: C45E/S460NH

Surface Treatment: Galvanized or Epoxy coating when necessary.

Others: Chamfered, stamped or color coded for grade identification when necessary.

T – THREAD IBO BARS

TECHNICAL DATA

	T30	T40L	T40N	T52	T76L	T76N	T76S
Average Inner Diameter	11.0 mm	20.0 mm	16.0 mm	26.0 mm	58.0 mm	51.0 mm	44.0 mm
Cross-Sectional Area	420 mm²	715 mm²	879 mm²	1250 mm²	1610 mm²	1990 mm²	2400 mm²
Yield Load	260 kN	430 kN	525 kN	730 kN	1000 kN	1200 kN	1500 kN
Ultimate Tensile Load	320 kN	540 kN	660 kN	930 kN	1200 kN	1600 kN	1900 kN
Yield Stress	620 Mpa	600 Mpa	590 Mpa	580 Mpa	620 Mpa	600 Mpa	620 Mpa
Ultimate Stress	760 Mpa	750 Mpa	750 Mpa	750 Mpa	750 Mpa	800 Mpa	790 Mpa
Weight	3.30 kg/m	5.60 kg/m	6.90 kg/m	9.90 kg/m	12.60 kg/m	15.60 kg/m	18.80 kg/m
Elongation Agt	> 5%	> 5%	> 5%	> 5%	> 5%	> 5%	> 5%