Rock wool shell of pipe is made of natural basalt as the major materials which are made into man-made inorganic fibers by fast centrifugal equipment after high-temperature melted, and at the same time adding special adhesives and dust laying oil. It can be made into various rock wool heat-preserving shell of pipe with different specs and requirements by heating and solidify. Also, rock wool can be composite with glass wool and alumina silicate wool into heat-preserving shell of pipe.
Scope of application: 
Heat insulation of various hot and cold pipelines, and hidden and exposed pipelines.
Heat insulation of pipelines in electric power, petroleum, chemical industry, light industry, metallurgy and etc.
Product specifications:

nominal		inner diameter	thickness
mm	()	mm	30	40	50	60	70	80	90	100	120
15	1/2	22	V	V	V	V	V	V	V	V
20	3/4	27	V	V	V	V	V	V	V	V
25	1	34	V	V	V	V	V	V	V	V
32	1-1/4	43	V	V	V	V	V	V	V	V
40	1-1/2	48	V	V	V	V	V	V	V	V
50	2	60	V	V	V	V	V	V	V	V
65	2-1/2	76	V	V	V	V	V	V	V	V
80	3	89	V	V	V	V	V	V	V	V
90	3-1/2	106	V	V	V	V	V	V	V	V
100	4	114	V	V	V	V	V	V	V	V	V
125	5	140	V	V	V	V	V	V	V	V	V
150	6	169	V	V	V	V	V	V	V	V	V
200	8	219		V	V	V	V	V	V	V	V
250	10	273		V	V	V	V	V	V	V	V
300	12	325		V	V	V	V	V	V	V	V
350	14	356			V	V	V	V	V	V	V
375	15	381			V	V	V	V	V	V	V
400	16	406			V	V	V	V	V	V	V
150	18	456					V	V	V	V	V
475	19	483					V	V	V	V	V
500	20	508						V	V	V	V
550	22	558						V	V	V	V
600	24	610						V	V	V	V

We can also offer other specs of products. Welcome to contact us!

Choice of facings:
Heat-preserving meshes should possess the functions of anti-condensation, moisture-proof and etc in different working environments, so it needs to stick protective coating outside of heat preservation shell of pipe. Zhongya has a variety of facings to choose.