Basic Info.

Model NO.

UHP, HP

Origin

China

HS Code

8545110000

Model NO.

UHP, HP

Origin

China

HS Code

8545110000

Product Desciption

Company Profile

CNBM INTERNATIONAL CORPORATION is a primary subsidiary of China National Building Material Group . And CNBM Group is a central government-owned enterprise and a Fortune Global 500 company (Ranking 203th in 2019).It is the largest building material manufacturer and service provider in the world.

CNBM Group is integrated with four business segments: Manufacture, R&D,Sets of equipment and Logistics trading.Graphite electrodes are our main products.We have 4 production bases and the annual production capacity of graphite electrodes is 60,000 MT.

CNBM International is highly recognized by its business partners and clients all over the world and has established good business relationship with the customers in over 120 countries and regions all over the world.
Product Description
Graphite electrode is made from the domestic first class petroleum coke and high quality needle coke and widely used in the electric arc furnaces for production of alloy steels, metal and other nonmetallic materials, etc. 

The Graphite electrodes include: regular power, high power, ultra high power and square electrode. The range of diameters covers from 200mm to 800mm. 

Features
*Low electric resistivity
*Good electrical and thermal conductivity
*High oxidation resistance
*Greater resistance to thermal and mechanical shock
*High mechanical strength
*High machining accuracy


Technical Specifaication

Item		Unit	RP		HP		UHP
			250-400	450-800	300-400	450-700	300-400	450-700
Electric Resistivity	Electrode	μΩ.m	7.5-8.6	7.5-8.8	5.5-6.8	5.5-7.0	4.6-6.0	4.8-6.2
	Nipple		4.5-5.5		4.0-5.0		3.5-4.5
Bending Strength	Electrode	Mpa	≥8.0		≥11.0		≥11.0
	Nipple		≥15.0		≥16.0		≥18.0
Elastic Modulus	Electrode	Gpa	≤9.0		≤11.0		≤13.0
	Nipple		≤13.0		≤14.0		≤15.0
Bulk Density	Electrode	g/cm3	1.55-1.65		1.63-1.73		1.65-1.75
	Nipple		1.70-1.75		1.73-1.80		1.75-1.82
Ash	Electrode	%	≤0.3
	Nipple
CTE(100-600)ºC	Electrode	10-6/ºC	2.00-2.50		1.80-2.00		1.30-1.50
	Nipple		1.50-1.80		1.50-1.80		1.20-1.40

Current Carrying Capacity

Nomina diameter		RP		HP		UHP
		Current Carrying Capacity	Current Density	Current Carrying Capacity	Current Density	Current Carrying Capacity	Current Density
in	mm	A	A/cm2	A	A/cm2	A	A/cm2
12	300	10000-13000	14-18	13000-17400	17-24	15000-22000	20-30
14	350	13500-18000	14-18	17400-24000	17-24	20000-30000	20-30
16	400	18000-23500	14-18	21000-31000	16-24	25000-40000	19-30
18	450	22000-27000	13-17	25000-40000	15-24	32000-45000	19-27
20	500	25000-32000	13-16	30000-48000	15-24	38000-55000	18-27
22	550	32000-40000	13-16	35000-55000	14-22	42000-64000	17-26
24	600	35000-41000	13-15	41000-61000	14-21	50000-73000	17-25
28	700	39000-48000	10-12	55000-82000	14-21	67000-99000	17-25
32	800	43000-54000	8-10	/	/	/	/

Specification &Allowable deviation of graphite electrode

Nominal Diameter	Actual Diameter(mm)	Actual Diameter(mm)			mm	Allowable Tolerance
mm	lnch	Max	Min	Rough spot(B)		Length	Short Length
200	8"	205	200	197	1600/1800	±100	-275
250	10"	256	251	248	1600/1800/2000
300	12"	307	302	299	1600/1800/2000/2200
350	14"	357	352	349	1600/1800/2000/2200
400	16"	409	403	400	1600/1800/2000/2200
450	18"	460	454	451	1600/1800/2000/2200
500	20"	511	505	502	1800/2000/2200/2400
550	22"	562	556	553	1800/2000/2200/2400/2700
600	24"	613	607	604	2000/2200/2400/2700/3000
650	26"	663	659	656	2000/2200/2400/2700/3000
700	28"	714	710	707	2000/2200/2400/2700/3000

Quality Assurance & Control
· National Certified Laboratory
· Key testing instruments, including: specific resistor, bulk density meter, elasticmodulus    meter, bending strength inspector, ash analysis meter, CTE analysis meter, etc.
· On-time instrument calibration
· On-site properties testing, including: L-CTE,C-CTE, Specific resistance, bulk density,Bendingstrength,ashcontent,      elastic modulus


Factory&Production Facilities


Graphite electrode process flow

 Dimension drawing of nippies


Customers Visit


FAQ
Q:Are you a trading company or manufacturer?
A:CNBM is a large-scale central governmental industrial group with its own manufacturing sector, research and development sector, trading sector and logistics sector.

Q:I have some special requirement about specifications.
A:We have a well-rounded product range, which endows us with the capability of applying many special specifications. Please feel free to contact us with yours.

Q:Do you accept OEM service?
A:Yes, we do.

Q:What is your delivery time?
A:It depends on the size/complexity of your order and our own production schedule. Usually we provide a faster delivery than the industry's average.

Q:What is the payment term?
A:Our payment terms are negotiable.

Q:Can I have my own logo on the product?
A:Sure, we can apply your own logo on the products according to your requirement.