Double metal cylinder cover:

     It is closely combined by two layers inside and outside. The outer casing is forged and worn, and adopts centrifugal forging technology; the inner sleeve is high-chromium wear-resistant and corrosion-resistant, and the hardness after heat treatment reaches 62 Rockwell C grade.

     The production of double metal cylinder sleeves is strictly controlled within the tolerance range, ensuring easy installation, high internal finish, abrasion resistance, corrosion resistance and long service life, suitable for all kinds of harsh working environments.

     Jacket: 45# forging, tensile strength σb>610MPa, yield strength σs>450MPa, elongation §>17%, hardness HB180-200.

Inner sleeve: high chromium cast iron (centrifugal casting), annealing hardness HRC ≤ 40, quenching hardness HRC60-67.






Emsco
• F-350 • F-500 • F-650• F-800 • F-1000• F-1300 • F-1600
 Gardner Denver
• TEE • PAH • PZ-7• PZ-8 • PZ-9 • PZ-10 • PZ-11
 Ideco
• T-500 • T-800 • T-1000 • T-1300 • T-1600
 National
• 7-P-50 • 8-P-80 • 9-P-100• 10-P-130 • 12-P-160  • 14-P-220
 Oilwell
• A-850-PT • A-1100-PT • A-1400-PT • A-1700-PT
 Bomco
• F-500 • F-800 • F-1000• F-1300 • F-1600• F-2200HL 
 Wirth
• TPK 1000 • TPK 1300 • TPK 1600• TPK 2000 • TPK 2200 
Aplex
• SC -170L • SC-230 • SC-300
 
 
 
 
 
 
 
BOMCO&EMSCO:
 
F-500 F-800 F-1000 F1300 F1600 FB-1300 FB-1600 D-375 D-700
 
 
LANSHI
 
3NB-1300C  3NB-1000  3NB-1000C  3NB-800
 
QINGZHOU:
 
SL3NB-1300A  QZ--1000  QZ-500  QZ-350  QZ800  SL3NB-1600
 
GARDNER DENVER:
 
PZ-7  PZ-8  PZ-9  PZ-10  PZ-11
 
IDECO:
 
T–500  T–800  T–1000  T–1300  T–1600
 
NATIONAl:
 
7P50  8P80  9P100  10P130  12P160 14p200 14P220 K-700  K-700A  K-500  K-500A
 
OILWELL:
 
A–350PT  A–560PT  A–600PT  A–850PT  A–1100P  A–1400PT  A–1700PT
 
RUSSIAN:
 
8T-650 UNBT-600 UNBT-950  UNBT-1180L  UNBT-950A  UBT-400 BT-600 UB-590 UNB-600  8T310 8T650-01