Straight hole nozzle has the characteristics of a simple structure, only with the converging section and straight section. However, this kind of nozzle also has the problem of the vortex

at the entry area, high pressure loss and low outlet velocity, as lower as 50% of Venturi nozzle.

Specifications:

Density: 2.40-2.65 g/cm3

Elastic modulus: 510 Gpa

Knoop Hardness: 3300

Flexural strength: 400-650 Mpa

Compressive strength: 4100 Mpa

Fracture toughness: 4.5-7.0 Mpa.m1/2

Coefficient of thermal expansion: 4.5x106

Thermal Conductivity: 29 m0k

Maximum permissible service temperature in air: 1500℃

Regular size list for straight core

Diameter(mm)	Diameter (mm)	Length(mm)
20	4	45
20	6	45
20	8	45
20	10	45

Diameter(mm)	Diameter (mm)	Length(mm)
20	6	60
20	8	60
20	10	60

Diameter(mm)	Diameter (mm)	Length(mm)
20	6	80
20	8	80
20	10	80

Diameter(mm)	Diameter (mm)	Length(mm)
21	8	82
21	10	82
21	12	82

Other sizes:

Diameter(mm)	Diameter (mm)	Length(mm)
15	6	55
15	8	55
25	8	60
25	10	60
25	12	60
30	8	40
30	10	40
30	12	40
30	14	40

Venturi type:

Coarse thread and Fine thread

Boron carbide nozzle insert with Aluminum or stainless steel jacket

Entrance width	Entrance depth	Bore	Exit	Length
32	40	6.5	10.5	135
32	45	8.0	12.0	150
32	48	95.	14.0	165
32	52	11.0	15.5	190
32	58	12.5	17.0	215
Entrance width	Entrance depth	Bore	Exit	Length
25	28	6.5	10.5	135
25	35	8.0	12.0	150
25	38	95.	14.0	165
25	42	11.0	15.5	190
25	42	12.5	17.0	215

(mm)

Material Comparation Chart:

Item	Al2O3	SiC	B4C
Density	3.5g/cm3	3.1g/cm3	2.48g/cm3
Hardness	HV1650	HV2750	HV3300
Flexural strength	290 Mpa	380 Mpa	400-650 Mpa
Compressive strength	850 Mpa	3970 Mpa	4100 Mpa
Fracture toughness	4.8 Mpa.m1/2	4.0 Mpa.m1/2	4.5-7.0 Mpa.m1/2
Thermal Conductivity	20 m0k	120m0k	29 m0k

Company Brief Introduction:

Hunan High Broad New Material Co., Ltd.

Basic Information

	Business Type:	Manufacturer, Trading Company
	Main Products:	Boron Carbide,Silicon Carbide,Boron Carbide parts,Silicon Carbide parts,Ceramic products
	Number Of Employees:	10 - 100 People

Trade & Market

Main Markets:

Eastern Asia
North America
Eastern Europe
Western Europe
Southeast Asia
Northern Europe
Southern Europe
Domestic Market
Mid East
South America

(and your area)

Total Annual Sales Volume:

US$5 Million - US$10 Million

Export Percentage:

85% - 95%

Factory Information

	Factory Size (Sq.meters):	15,000-28,000 square meters
	Factory Location:	changsha,hunan P.R. China
	No. of Production Lines:	20
	Number of R&D Staff:	10 - 20 People
	Number of QC Staff:	10 - 20 People
	Certifications:	ISO9001,ISO14001,EJ/T9001-2005
	Contract Manufacturing:	OEM Service Offered Buyer Label Offered

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