Cold rolling tube mills

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Cold rolling tube mills are designed to produce seamless cold rolled high-accuracy tubes from different steel grades and t titanium copper and aluminum-base alloys.

Tubes rolled by such method have high-precision sizes of wall thickness, outer and inner diameters, high-quality of outer and inner surfaces and metal favorable structure.

Such tubes are mainly used in atomic and energetic industries, in cosmic and air techniques, ship building, oil-chemistry and chemistry industries and other sectors of machinery building.

EZTM JSC produces mills of more than 50 modifications to manufacture tubes from 4 to 450 mm in diameter considering use of optimal technology and production conditions at Customer site:

• Mills can have side or butt end load of billet with continuous working scheme or with stops for reloading.
• Mills can be produced with different stand type: with forced movable housing, with movable cassette and forced housing with support skid, with movable cassette and support rolls and stationary forced housing. Stands can be equipped with different type of gauges-ring type: horseshoe shaped, semi disks or rollers with constant groove profile.
• Mills are presented in one strand or two strand design.
• Billet length is from 1,5 to 15 meters.
• Mills are supplied with outlet tables to receive tubes in straight lengths after their cutting in the mill train or with coiling of finished tubes after rolling.

Use of new rolling schedules with application of new power machines provided the manufacture of high-precision cold-deformed tubes which correspond to international standards.

Use of devices for balancing of dynamic and static loads in the displacement drive of the working stand provides high speed of mills and minimum power expenditures when operating the equipment.

New arrangement of machines provides minimum foundation depth of the equipment which considerably reduces construction and erection costs.

Increased monthly and annual average output is achieved as a result of time reduction for auxiliary works and the equipment repair.

COLD ROLLING TUBE MILLS (CRTM) SPECIFICATIONS

Mill	PARAMETRERS
	Billet diameter, mm	Finished tube diameter, mm	Finished tube wall thickness, mm	Stand stroke, mm	# of stand stroke per min	Capacity, m/hr	Power, kW
CRTM 20	20	6 - 15	0,3 - 2	300	260	50 - 200	50
CRTM 40	40	8 - 25	0,3 - 3	500	220	30 - 400	80
CRTM 60	60	16 - 40	0,4 - 5	700	180	30 - 400	150
CRTM 80	80	20 - 60	0,6 - 10	800	160	30 - 300	200
CRTM 110	110	40 - 90	1 - 12	1080	120	30 - 250	300
CRTM 150	150	80 - 120	1,5 - 15	1200	80	30 - 200	450
CRTM 200	200	100 - 180	2 - 20	1400	70	30 - 200	800
CRTM 280	280	140 - 260	3 - 30	1480	60	30 - 150	1000
CRTM 500	500	180 - 450	3 - 30	1300	40	20 - 100	1300
CRTM2-40	40	8 - 25	0,5 - 3	600	160	200 - 1200	100
CRTM 2-70	70	20 - 55	0,8 - 4	800	120	150 - 1000	210
CRTM 2-110	110	40 - 90	2 - 6	1080	90	150 - 800	400

When ordering the equipment please indicate the following:

• material and dimensions of a billet;
• finished tube dimensions;
• billet dimensional accuracy and required accuracy of a finished tube;
• required capacity.