Coal tars tend to stabilize in the upward direction. Many tar production companies have indicated that the supply is still tight, but there is little room for price increases. The highest price is now 2250 yuan (t price, the same below), more difficult to increase the transaction price, the market mainstream transaction price of 2,000 yuan.
Crude benzene is still in tight supply. Due to the downturn of the downstream pure benzene market, crude benzene prices have been blocked. Some companies are experiencing tight supplies and the prices are slightly upwards. The highest offer is now around 4,300 yuan, and the mainstream transaction price is still 4,100 yuan.
The coking benzene remained in a stable state of operation. The price was basically the same as that of the previous period. The mainstream price was 5,500 to 5,600 yuan. Some companies slightly increased their prices due to a slight increase in the price of crude benzene, but the market pressure was greater.
Since the coking toluene is approaching a long vacation, the market demand is normal, and the coking toluene price is running steadily and weakly.
The coking xylene trend is basically the same as that of coking toluene, and the price is stable, and the market transactions are general. The current mainstream price is 5500 to 5600 yuan.
The growth of industrial naphthalene was slightly slowed down. Affected by the stabilization of tar prices and changes in transactions before and after the festival, the excessively high prices made the pressure in the downstream market surge, and the upward momentum of prices was already insufficient. Currently, most companies offer prices at 7200. Between 7500 yuan.
Crude phenol Although the downstream product market has not yet improved, due to the small amount of crude phenol resources and the periodical supply of goods, there has been a period of time, and the crude phenol price has remained stable. The mainstream price is 6,200 to 6,500 yuan.
The washing oil market price remained steady, mostly staying at around RMB 3,500. Some companies' prices were still rising. However, due to the upward stabilization of tar, the space for washing oil to continue to rise was already very small.
Before the holiday, since the oyster sauce was still tight, the price was still rising further. The mainstream price was about 2,600 yuan, and the price of some companies had risen to 3,000 yuan. However, the current price has been at a high level, and the upward momentum has weakened. Post-holiday prices are still stable at pre-holiday prices.
Maleic anhydride The pre-holic maleic anhydride market continued to slump, and companies were eager to ship. The prices were down. Most of the companies sent them to Jiangsu, Guangdong and other places at prices of about 10,200 yuan. The post-holiday market has a stronger wait-and-see attitude and the prices are basically maintained at pre-holiday prices.
dredge pumps ranging from inlet diameters of 400mm up to 1400mm. Our CFD optimized pumps have an excellent suction performance, high efficiency, long wear life and require a minimum of maintenance. The pumps can be delivered in different types of wear resistant materials, and can be executed in a large number of different configurations.
Photo of our Dredging Pump:
Single-Walled Dredge Pumps
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.
Double-Walled Dredge Pumps
double-walled dredge pumps are specially designed for high pressures, starting typically from 16 up to 30 bars. The double-walled pump design is based on the concept of pressure compensation between the outer-, and inner-pump casing. All types of configurations are possible such as 3,4 and 5 vane impellers, and casted or welded outer-casings.
Underwater Dredge Pumps
The underwater dredge pumps are used in cases where the highest possible suction performance is required. They basically have the same possibilities and options as our single-walled pumps have. Depending on our clients' preference they are executed with direct motor drive or integrated gearbox, with or without pressure compensation.
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
Material
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.
3)cast seel
GS32NiCrMo14.4.2
Chemical:
C:0.30-0.36% Si:0.60%MAX
Mn:0.60-1.00% Cr:1.00-1.70%
Ni:3.00-4.00% Mo:0.30-0.60% S:0.025%MAX P:0.03%MAX
V:0.05%MAX Cu:0.30%MAX
Mechanical:
Rm:min1100MPa;Rp0.2:≥850
A:≥8%;KV≥15J(20℃)
4)cast iron
3)Inspection
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.
Dredging Pump
Dredge Pump,Dredging Equipment,Diaphragm Pump
Unisite Group Ltd. , http://www.unisitemarine.com