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
Silica ramming mass is produced by calcining crushing and grading of the white crystalline quartz containing 9990 of SiO2 SRM is a refractory material used in induction furnace as lining materials Silica ramming mass is composed of silicon carbide SiC silica SiO2 aluminum oxide Al2O3 and iron oxide Fe2O3 Applications Dry lining refractory for iron steel aluminium Foundry
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Kingston ddr2 ram 2gb 800mhz-pc6400 240pin long-dim Kvr800d2n6/2g ddr2 ram Feature: Capacity: 2gb ddr2 ram Ddr memory type : ddr2 No. Of pins: 240 pin Module type: long dimm Function: non ecc memory Warranty: 5years Retail packing
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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
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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
Model: DDR3 1600MHZ Capacity: 4GB Memory Speed: 1600MHZ PC3-12800 Type: DDR3 SDRAM Form Factor: DIMM 204-pin Features: Unbuffered Upgrade Type: Generic CAS Latency: CL11 Supply Voltage: 1.35V Chips Brand: HY, SM, Elp,MT Ram Brand: Supply all kinds of brand rams Compatibility: All brand motherboard desktop Data Integrity Check: Non-ECC Chips Organization: 512*8-bits Warranty: Limited lifetime warranty
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. 10cm*3cm*0.5mm
Specifications Memory Type: DDR3 Memory Speed: 1333MHz DDR3 Memory Speed MHz: 1333MHz Memory Size: 2048MB Total Memory Size: 2GB Memory Channels: Dual Memory Socket: Long Dimm Memory CAS Latency: 4-4-4-12 Memory Timing: 4-4-4-12 Pins: 240 Voltage: 1.5V 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 Kingston packing
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 Kingston packing
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Ram Horn Scales Size Available In Different Sizes Material Buffalo Horn Shape Rectangular Color Creamy Feature Good Strength Pattern Plain
Natural Ram Horn Material Natural Horn Color Black Finish Polished Size Available in Different Sizes Feature Nice Finish
