Usha Martin Procurement

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Procurement

Usha Martin procures the following items on a regular basis and would like to invite prospective suppliers of these items to register themselves with the company. To register, please click on the —

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Low ash metallurgical coke	Porous Plug	Electra Gun	Calcium Silicide Cored Wire
Lead Cored Wire	Ramming Mass	Copper Mould Tubes	Dolomite Bricks and Monolithics
Slax	Zirconia Nozzles	Full Cone Nozzles	Casting Powder
Copper Rods	Hdpe	Filling Compound	Specification of Wire Rod
Zinc	Lead	Sisal Fibre	Shredded and Heavy Melting Scrap

ASH	12.50% MAX
V.M.	1.50% MAX
S	0.75% MAX
M40	80% MIN
M10	8% MAX
CSR	60% MIN
CRI	30% MAX

TYPE	RADEX - DB605-PU/E//SO5AA275
OUR MATERIAL CODE	6120050012
SPECIFICATION
MgO	Dif - 75% to 78%
Cr2O3	10% TO 12%
Fe2O3	6% TO 7.5%

SPECIFICATION
MgO	82% MIN.
SiO2	6.7% MAX
Al2O3	0.5% MAX.
Fe2O3	1.6% MAX.
CaO	3.0% MAX.

0.40 MM SHEATH THICKNESS
CHEMICAL ANALYSIS
Si	60% to 62%
Ca	30% to 32%
C	1% maximum
Fe	4% maximum
Al	1.2% maximum

CHEMICAL ANALYSIS

99.9% PURITY

CaO	42%-45%
MgO	53.5%-55%
Si02	1.00%max
Fe2O3	2.00%max
Al2O3	0.75%max

FOR CONTINUOUS CASTING MACHINE

150 Sq mm & 110 Sq mm sizes

Double taper copper mould tubes. As per approved drawings

DOLOMAX RDC 3

A high purity improved resin-bond dolomite brick which offers excellent resistance to basic slags and steel erosion. Product required for improving de-sulfurization efficency and steel cleanliness as well as being most cost effective ladle refractory available.

Al2O3	0.40%
Fe2O3	0.80%
SiO2	0.80%
MgO	41%
CaO	57%
Bulk Density	2.95 g/cm cube
Retained Carbon	3.30%
Porosity	16%
DOLOMAX RBD-6
A high Purity resin-bond dolomite brick containing 6% to 8% carbon. Product required for improving strength and more resistance to physical abrasion than high carbon products.
Al2O3	0.50%
Fe2O3	0.80%
SiO2	0.70%
MgO	41%
CaO	57%
Bulk Density	2.85 g/cm cube
Retained Carbon	5.30%
Porosity	10%
JEBCORAM TL
This sticky granular dolomite product is made from a high purity dolomite grain and a proprietary non-toxic resin binder system. The resin bond provides good low and intermediate temperature strength until a strong high temperature ceramic bond developed.
Al2O3	0.50%
Fe2O3	0.90%
SiO2	1.30%
MgO	40.10%
CaO	57.20%
JEBFILL 88
A dust - free high alumina vibrating material for use as a ladle safety lining or as a backfill. Jeb-fil 88 sinters shifting and voids, and adheres to alumina safety linings because of compatible thermal expansion charateristics. Jeb-Fil 88 provides superior lining protection from metal.
Al2O3	84.50%
Fe2O3	1.20%
SiO2	6.70%
TiO2	3.30%
DOLOMITE FINES
Milled high purity dolomite fines for use as a dry dusting mortar and fill. Applied dry by brushing or trowelling.
Al2O3	0.40%
Fe2O3	0.80%
SiO2	0.70%
MgO	41.00%
CaO	57.00%

MgO	78% - 82%
SiO2	4.5% - 6%
Ai2O3	0.8% - 1.2%
Fe2O3	0.4% - 0.7%
Na2O/K2O	1% - 2.5%
Bulk Density	0.68 g/cm cube

SIZES (BORE DIAMETER)
12.7MM	13.0MM	14.0MM	14.5MM	15.0MM
Specification : ZrO2 - 95% min.

MOD. L-R. 3/8" (BSP 3/8"), FEMALE THREAD, MADE OF BRASS

EQUIVALENT TO METALLURGICA SCORIALIT GRADE
	SPH-C 176/ALM 9	SPH-C 189/E 2	SPH-C 411-81/E	E 841 I
SiO2	30% - 32%	30% - 32%	26%-28%	40%-42%
CaO	30% - 32%	18%-20%	21%-23%	33%-35%
Al2O3	6.25%-6.5%	5.5%-6%	10%-11%	2.5%-3%
C free	17%-17.5%	21%-23%	15%-17%	0.10%
Na2O3	3%-3.5%	8.5%-9.5%	2.5%-3.75%	7.5%-8.5%

The rods shall be continuously cast and rolled electrolytic grade copper, suitable for wire drawing from 8.0mm to 0.32mm without intermediate annealing. It shall be clean, smooth, free from surface defects and impurities. There shall be no joint in any of the coils.

Characteristics
Diameter	8 mm
Tolerance	+/- 0.40
Elongnation at Break	30% min.
Resistivity at 20 Degree Centrigrade	0.017241 (max.)Ohms mm square / m
Surface Quality	Shall be free from Oxidation and Imperfection.

The material shall be virgin in granular form and free from contamination and foreign matters. The material shall have good flow charateristics for high extrusion speeds. It shall contain antioxidant for high thermal stability and metal de-activator for high resistance to metals.

Characteristics
Appearance and Structure	Opaque Natural Shade. Homogenous granules.
Density	0.941 - 0.959 gm/cc
Tensile strength	150 (min.) kg/cm square
Elong.	At Break : +/- 10%

The materiall shall have excellent water resistant property and fully compatible with medium/high density polythene containing an antioxidant. It shall be free from odour and shall have no toxic and dermatic hazards.

Characteristics
Colour and Structure	Highly pasted, Homogenous compound, Does not obscure colour of insulation.
Appearance	Shall be free from contamination of foreign matters and segregated oils.
Density	0.89gm/cc (+/-0.1)
Drop Point	87 degree centrigrade (min.)
Viscosity at 100 degree centrigrade	120 cst (+/-20)
Flash point	220 degree centrigarde min
Volume Expansion	8.0% max.

Scope

This specification describes the chemical, physical, mechanical, metallurgical as well as packing, marking and certification requirements of wire rods used for the manufacture of wires for elevator ropes of various grades . Steel shall be made through electric furnace route.Vacuum degassed steel is preferable.

Chemical Composition

The material shall be supplied in silicon killed condition. Grades having carbon above 0.85 shall always be procured in aluminum killed condition.

Physical Condition

Wire rods shall be supplied in control cooled condition. Supplies in other conditions are subject to prior agreement.

Preferable coil weight is 1000 +/- 100 kg. Other coil weights can be accepted with prior agreement.

Coil ID shall be min 800mm and OD shall be 1500mm max.

Tolerance on diameter and ovality shall be as follows :