Flat Top Tower Crane, also known as Topless Tower Crane, has the advantages of quick and easy assembly. Usually many Flat Top cranes have been used on construction projects or near airports where overhead clearance is frequently a concern. BQ models of flat top Tower Crane are 8T Flat Top Tower Crane GHP5517-8 and GHP6016-8; 10T Flat Top Tower Crane GHP6016-10, GHP6518-10 and GHP 6520-10;12T Flat Top Tower Crane GHP6520-12 and GHP7524-12; 16T Flat Top Tower Crane GHP7524-16,ect. Flat Top Tower Crane Flat Top Crane,Flat Top Tower Crane,Topless Tower Crane,10T Flat Top Tower Crane SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.bq-cranes.com
Injection screw barrel, Single Screw Barrel for PVC injection / PVC injection screw barrel, plastic machinery spare parts
Specification:
Screw diameter: Φ 20mm-Φ 220mm
Mould clamping force: 250T-3200T
Shot weight: 30G-30000G
Base Materials:
1). 38CrMoAlA(JIS SACM645).
2). 42CrMo(AISI 4140).
3). 4Cr5MoSi V1 (JIS SKD-61).
4). 9Cr18MOV
5). HPT
Bimetallic alloy materials:
1). Fe-based alloy
2). Ni-based alloy/Deloro alloy
3). Co-based alloy
4). NiCo-based alloy
5). Tungsten carbide/Wolfram carbide
Technics:
Heat treatment
High-frequency quenching
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Technical parameter:
Nitrided layer depth: 0.5-0.8mm
Nitrided hardness: 900-1000HV
Nitrided brittleness: Less than grade 1
Surface roughness: Ra0.4
Linearity of screw: 0.015mm
Hard-chrome plating hardness after nitriding: >=950HV
Chrome-plating layer depth: 0.025-0.085mm
Bimetallic layer depth: 3mm
Warranty and service: 1 year
About ZY:
1. Rich strength----We have our own professional teams in the sales, design, production, inspection and customer service areas. We concentrate to bring customers the most perfect customer experiences.
2. High-quality products----We adopt a series of advanced production and processing equipments such as CNC machines, Stellite PTA welding machines to ensure the quality of our products.
3. Large international market----We do foreign trade more than 5 years, we have a set of mature foreign trade system, our customers are all over the world. We will continue to expand our international market.
4. Location advantage----We are located in China's screw town----Jintang town, Zhoushan city, near to Ningbo Port and Shanghai Port.
5. Serious and responsible attitude----Over the years, we always maintain a serious, professional and responsible attitude, make our best efforts to meet customers' demands.
Welcome to contact us~!
twin conical screw barrel
Diameter
Φ25/53,35/77,45/90,51/10,
55/110,65/120,65/132,
70/140,75/150,80/156, 80/172,90/184 92/188.etcÂ
Designing
 Screw structure and compression
ratio can be designed according
to different products  &different mixtrues.
 Standard Specifications
ISO9001,
GBT9001-2000
SO9001-2000
IAF,BOS,CNASAdvantages
1.Long time Nitriding TechnologyÂ
2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy3. we uses special alloy powders being sprayed and welded on the screw's ridge,and uses different alloy and welding methods for the screw of different functions.
Materials
38CrMoAlAÂ
(JISÂ SACM645)
SKD61 .etcApplication
 PS,HIPS,ABS,SAN,EPN/LDPE,HDPE,UHMPE,
EVA,PP,PVC,PMMA,POM,PAST,PET,PBT
Nitride Depth
0.4mm-0.7mm
Technology
1)Longer time Gas Nitriding treatmentÂ
2)special anti-wear & abrasion alloy (bimetallic)
3)tungsten carbide;4)cobalt base alloy
5)stainless steel 6)Gh113 nickel based alloy Â
Nitride Hardness
950-1050HV
Packing
Wrapped up by film in wooden
Nitride Brittleness
≤Grade One
PaymentÂ
TermT/T , L/C ,Western Union
Surface Roughness
Ra0.4um
DeliveryÂ
Term20-30 working days
Screw Straightness
0.015mm
Port
 DepartureShanghai/Ningbo
Alloy Hardness
HRC55-62
Min. Order
1Â set
Alloy Depth
1.5mm-3.5mm
Warranty period: 2-4years(Depends on the plastic raw materials)
Bimetallic: much longer lifetime.
Nitriding time
Over 180 hours
Injection Screw Barrel Pet Bottle Blowing Screw Cylinder Injection Molding Machinery