Steel gear pump shells
Basic Info
Model No.: USA-303
Product Description
Pump shell is a main part of dredge pump. Single-walled dredge pumps are `all-round` and used in all types of dredgers. They are designed for typical pump pressures up to 16 bars, and can be excecuted with different types of pump seals such as: stuffing box, mechnical seal or hydro seal.
Casting
1)Pattern
Collection in our storehouse. Inspection of pattern in our workshop.
Pieces cast with wrong pattern due to insufficient inspection of pattern are rejected.
Free delivery of pattern (in good condition) with last cast piece of order to our client or stored in our workshop for future new production but with time-limited or quantity-bound.
2)Cast pieces
Materia
The use of the cast pieces requires Other chemical analysis and mechanical properties (unless otherwise mentioned on drawing).
Cast pieces group S (Wear) :
Impellers, pumphousings, dredge lines (bends, branchpipes, etc.)
Cast pieces group C (Construction) :
Other pieces as pivots, rod eyes, wire sheaves etc.
1)cast steel
|
| GS52 |
|
| Group C |
| DIN Material number | DIN1681 |
| Tensile Strength RmMpa | 520 |
| Yield Strength Rp 0.2 Mpa | 260 |
| Elongation A5 % | 18 |
| Hardness HB | 160 |
| Impact Value for thickness until 30mm | 27J at 20°C |
| Impact Value for thickness more than 30mm | 22J at 20°C |
2)cast steel
|
| GS20Mn5 | GS30Mn5 |
|
|
| cast pieces group C | cast pieces group S | cast pieces group C |
| DIN Material number | 11120 | 11165 | 11165 |
| Chemical analysis according | DIN17182 | DIN17205 | DIN17205 |
| Tensile Strength RmMpa | min.470 | min.500 | min.600 |
| Yield Strength Rp 0.2 Mpa | min.335 | min.305 | min305 |
| Elongation A5 % | 20 | 12 | 18 |
| Hardness HB | DIN17182 | 160-180 | DIN17205 |
| Impact Value | / | / | 32 J (20°C) |
Cast pieces are presented in our workshop, for inspection of dimensions and hardness after sandblasting and machining but before conservation and painting. Measurements are carried out by our services and deviations are sanctioned as follows:
At stress concentration area, MT&PT to check the crack, the qualified standard is no crack at these area.
1)
|
| GS20Mn5 | GS30Mn5 |
|
| outer-and midzone | cast piece group C | cast piece group S | cast piece group C |
| surface + volume | DIN1690 class 4 | DIN1690 class 4 | DIN1690 class 4 |
| shrinkage | DIN1690 class 4 | DIN1690 class 5 | DIN1690 class 4 |
2)
|
| GS52 |
| outer-and midzone | cast piece group C |
| surface + volume | DIN1690 class 4 |
| shrinkage | DIN1690 class 4 |
Company information
UniSite group was established in a strategic location, Chinese second largest port, Ningbo, which is characterized by visible leadership, vitality, innovation, long-term vision and a sound financial position.
As an international partner, we are specialized in providing comprehensive service of dredging, land reclamation, offshore projects, marine engineering, municipal engineering and environmental remediation projects.
Besides our own production base and technology system, we also have strategic partnerships with DONGPENG shipyard, a leading producer of chemical vessels in China.UniSite group was established in a strategic location, Chinese second largest port, Ningbo, which is characterized by visible leadership, vitality, innovation, long-term vision and a sound financial position.
As an international partner, we are specialized in providing comprehensive service of dredging, land reclamation, offshore projects, marine engineering, municipal engineering and environmental remediation projects.
Besides our own production base and technology system, we also have strategic partnerships with DONGPENG shipyard, a leading producer of chemical vessels in China.
Our equipment
Photos of our Steel Gear Pump shells
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Product Categories : Casting Pump And Spare Parts > Pump Shell