Technology:

	Hom	Haum rau Hlau Txiav (mm2)	Qhov loj me (mm)					Bolt Number	Qhov hnyav (kg)
			B	M	L	R	H
	JBB-1	6.6 ~ 7.8	44	12	90	4.5	50	2	0.62 ib
	JBB-2	9.6-11.0 Nws	50	16	90	6.0	60	2	0.82 ib
	JBB-3	13.0-14.0 Nws	56	16	124	7.0 ib	65	3	1.90 ib

Nco tseg:

1. Lub cev clamp thiab npog phaj yog malleable hlau castings, tag nrho cov kub-dip galvanized

2. Lub ntsiab lus ntawm tus qauv ntawv thiab tus lej hauv lub rooj yog: J-txuas;B - Parallel Groove;B- xob laim kab;tus naj npawb qhia txog cov hlau strand