Mast for drilling rig 1. we are factory 2. Good quality 3. Quick delivery Mast      Our company designs and manufactures A masts, K masts (open-front masts), derricks, masts and bootstrap masts.     The shape of A-mast section is rectangle or triangle. A-mast has attractive features with high loading capacity and perfect local stability. Each section of A-mast is connected by pins. The mast is assembled on the ground and raised or lowered integrally by the power of the drawworks upon the gin poles.      The shape of K-mast section is "K" open face type. The beam legs adopt laminated girder structure. Each section of the mast is connected by pins. K masts can be assembled on the ground and raised or lowered integrally by the power of the drawworks upon the gin poles.        The derricks adopt tower type steel structure and bolts connection. They feature better integral stability and high loading capacity.       The bootstrap mast which is the latest line product developed by Company is a kind of telescoping and erecting mast which can be assembled vertically. The main feature is that the bootstrap mast can be divided into several sections along the vertical direction. The base section will be as the guide section and the support section to raise and assemble the other sections in turn by the power of drawworks or the hydraulic power, which can save the field greatly for the installation of the drilling rig.Basic Parameters

Model		JJ135/32-K	JJ170/41-K	JJ90/31-KS	JJ170/41-KS	JJ315/43-A
Max. Static load ,k/n		1350	1700	900	1700	3150
Clear height,m		32	41	31	41	43
Top span(front*side),m		1.4×1.4	1.8×1.8	1.5×1.2	1.6×1.8	1.6×2.1
Bottom span,m		6	6.5/7.5	2.9	6.5	9
Height of monkey board,m		16.5,17.5	24.5,25.5,26.5	17.5	24.5,25.5,26.5	22.1,23.5,25.5,26.5
Setback capacity,m		2000	3000	1500	3000	4500
WindLoading	Under no working condition(no set back,no load),m/s	36	36	36	36	36
	Under no working condition(stand,no load)m/s	47.8	47.8	47.8	47.8	47.8
	Raising & lowering Mast,m/s	≤8.3	≤8.3	≤8.3	≤8.3	≤8.3
Weight,kg		33100	39891	16627	62300	37874

 

Model		JJ170/42-K	JJ170/33-KS	JJ225/43-K	JJ225/42-K	JJ315/45-K
Max. Static load ,k/n		1700	1700	2250	2250	3150
Clear height,m		42	33	43	42	45
Top span(front*side),m		1.8×1.8	1.6×1.3	1.8×2	1.8×1.8	2.1×2.05
Bottom span,m		7.5	2.9	29	7.5	9
Height of monkey board,m		23.35, 24.35,25.35, 26.35	16.5,17.5	24.5,25.5,16.5	24.5,25.5,16.5	24.5,25.5,16.5
Setback capacity,m		3000	3000	4000	4000	5000
Wind,Loading	Under no working condition(no set back,no load),m/s	36	36	36	36	36
	Under no working condition(stand,no load)m/s	47.8	47.8	47.8	47.8	47.8
	Raising & lowering Mast,m/s	≤8.3	≤8.3	≤8.3	≤8.3	≤8.3
Weight,kg		40910	28000	46922	42000

Mast for drilling rig