Ram-type blow out preventer is important equipment used in oil drilling operations. Variable bore ram-type blowout preventer, as a improved type, is capable of sealing around drill pipes with a range of sizes and have advantanges such as low cost and convenience, expatiate on the sealing well mechanism, this paper discusses the structural characterstics of several typres fo variable bore ram, the operation of the varialble bore ram is simulated with the finite element model. the distribution of the stress is analysed, which provides the toudation for optinizing the design of variable bore ram-type blowout preventer
Ramming mass is a type of refractory material used in high-temperature industrial processes, particularly in furnaces and kilns. It is a mixture of various minerals like silica, alumina, and other bonding agents, designed to withstand extreme heat and pressure. Ramming mass is typically used to line the interior of induction furnaces and blast furnaces, providing insulation and protecting the equipment from thermal damage. It is applied by hand or machine and is often used for repairing or rebuilding furnace linings.
Products Status:
Stock
Application:
Desktop
Type:
DDR4
Function:
ECC
Brand Name:
Golden Memory
Model Number:
ddr4 ram
Place of Origin:
Guangdong, China
Support Capacity:
4GB/8GB/16GB
Frequency:
2133/2400/2666/3000/3200MHZ
Certificate:
FCC CE ROHS
Chipsets:
ETT Original Chipsets
Compatibility:
Full Compatible
Feature:
High-quality High Speed
Warranty:
Lifetime warranty
Packing:
Retail Packing
Brand:
Support Customized Logo
Shipping terms:
Shipped in 3 days after payment
Quick Details
Products Status:
Stock
Application:
Desktop
Type:
DDR2
Function:
ECC
Frequency:
533,667,800mhz
Brand Name:
OEM
Model Number:
pc ddr2 4gb ram price
Place of Origin:
Guangdong, China
RAM:
pc ddr2 4gb ram price
Certificate:
CE RoHS FCC
Brand supply:
OEM ODM clients logo
Service:
Support clients tested before pay
RMA:
Less than 1%
Warranty:
lifetime
Feature:
Work with all motherboard
Chipsets:
Original chipsets
Unit chip:
256mbx8 16c
Quick Details
Products Status:
Stock
Application:
Desktop
Type:
DDR2
Function:
ECC
Frequency:
533,667,800mhz
Brand Name:
OEM
Model Number:
pc ddr2 4gb ram price
Place of Origin:
Guangdong, China
RAM:
pc ddr2 4gb ram price
Certificate:
CE RoHS FCC
Brand supply:
OEM ODM clients logo
Service:
Support clients tested before pay
RMA:
Less than 1%
Warranty:
lifetime
Feature:
Work with all motherboard
Chipsets:
Original chipsets
Unit chip:
256mbx8 16c
Feature:
Capacity: 2gb ddr2 ram
Ddr memory type: ddr2
No. Of pins: 240 pin long dimm
Module type: long dimm
Function: non ecc memory
Chip: hynix. Elp. Micron. Samgsung. Infineon for ett chip
Detail description:
* ddrii 533/667/800 mhz
* 240-pin socket type dual in line memory module (dimm)
* 1.8v power supply
* data rate: 533/667/800mbps (max.)
* 1.8vpower supply for ddr ii products
* double-data-rate architecture, two data transfers per clock cycle
* bi-directional, differential data strobe (dqs) is transmitted/received with data, to be used in capturing data at the receiver
* four internal banks for concurrent operation (component)
* data mask(dm) for write data
*auto precharge option for each burst access
* programmable burst length: 2, 4, 8
* programmable/cas latency (cl): 3
* programmable output driver strength: normal/weak
* refresh cycles: (8192 refresh cycles/64ms)
* 2 variations of refresh
* auto refresh self refresh.
Performance
Clock Cycle Time (tCK) CL=4 : 3ns (min.) / 8ns (max.)
Row Cycle Time (tRC) : 60ns (min.)
Refresh to Active: 127.5ns
Row Active Time (tRAS) : 36ns (min.) / 70,000ns (max.)
Single Power Supply of : +1.5V (+/- .1V)
Power : 2.125 W (operating per module)
UL Rating : 94 V - 0
Operating Temperature : 0o C to 55o C
Storage Temperature : -55o C to +125o C
Computer DDR RAM 512MB,1GB 400mhz-PC3200 184PIN LONG-DIMM
KVR400X64C3A/1G, KVR400X64C3A/512MB DDR RAM
Feature:
Capacity: 1GB DDR RAM
DDR Memory Type : DDR (DDR1)
No. of Pins: 184 Pin Long Dimm
Module Type: LONG Dimm
Function: Non ECC Memory
Voltage: 2.6V
CAS Latency: 3
Detail Description:
* This document describes ValueRAM's 64M x 8-bit (1GB) DDR400 CL3 SDRAM (Synchronous DRAM) memory module.
* The components on this module include sixteen 64M x 8-bit (16M x 8-bit x 4 Bank) DDR400 SDRAM in TSOP packages.
* This 184-pin DIMM uses gold contact fingers and requires +2.6V.
* The electrical and mechanical specifications are as follows:
* Features: Clock Cycle Time (tCK) 5ns (min.) / 10ns (max.)
* Row Cycle Time (tRC) 55ns (min.) Refresh Row Cycle Time (tRFC) 70ns (min.)
* Row Active Time (tRAS) 40ns (min.) / 70,000ns (max.) Single Power Supply of +2.6V (+/- .1V) Power (IDD0) 5.408 W (operating)
* Operating Temperature 0 oC to 70 oC Storage Temperature -55 oC to +150 oC UL Rating 94 V ¿C 0
Products Status:Stock
Application:Desktop
Type:DDR3
Frequency:1600MHz
Brand Name:OEM/KVVEDO
Model Number:PC DDR3 4G
Place of Origin:Guangdong, China
Capacity:4GB
Certificate:CE RoHS FCC
Warranty:Life Time Years
Chipsets:Original Brand Chipset
Delivery time:3-5 work Days
MOQ:10pcs
Supply Voltage:1.5v
RMA:RMA
Model:longdimm-ddr1 8 bits
Capacity:512mb/1gb/2gb
The standard frequency:1066/1333/1600mhz
Application: desktop
Type: ddr long-dimm
Digit:8 bits
Vdd:1.8v(+/-0.1v)
Ic chips brands: brand or oem, original chips
Warranty:5 years
Retail packing or bulk packing(50pcs/box)
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