What is L80?

What is L80?

L80 : It means that a minimum of 80% of the luminous flux will be maintained for a defined period given the maximum ambient temperature.

Is L80 carbon steel?

L80 (API 5CT) is a medium carbon steel and is equivalent to SAE 4140. We offer L80 Casing Pipe which made up of three materials such as L80-1, L80 9Cr and L80 13Cr. These materials feature consistent mechanical properties but having different heat treatment method and chemical composition.

What does L80 B50 mean?

For example a luminaire could specify L80 B10 which would indicate 10% failure to reach 80% light output at the specified hours, or L90 B50 which would indicate a 50% failure to reach 90% of the light output at the specified hours.

What does L70 B50 stand for?

L70B50 means only 50% lamp survive at 70% lumen remaining at 50,000hours.

What does L90B10 mean?

So LB value indicate the real lifetime at a certain hours. Like L90B10 at 50,000 hours means the LED lamp keeping 90% lumen from initial lumen and only 10% light failed to reach 90% lumen.

What is N 80?

Drug: Morphine Sulfate Extended-Release. Strength: 80 mg. Pill Imprint: N 80.

What is N 80 pipe?

API 5CT Grade N80 oil casing pipe is a high-strength and high-toughness carbon seamless steel pipe. The commonly used methods are: quenching and tempering (including direct quenching + tempering after rolling), normalization, normalization + tempering, and tempering after rolling.

What is L80 tubing?

L80—A restricted yield-tubing grade that is available in Type 1, 9 Cr, or 13 Cr. Type 1 is less expensive than 9 Cr and 13 Cr but more subject to weight-loss corrosion. L80 Type 1 is used commonly in many oil and gas fields because of higher strength than J55.

What is L70 rating?

An LED is considered to have reached its rated life at that point in time when it emits 30% less light than it initially did. This 70% brightness level is termed “L70” and may also be referred to as Lumen Maintenance.

What is l80b20?

A rating of L80 B20 50,000hrs indicates that the LED will produce 80% or more of its initial light output at 50,000 hours of operation. In this case, the higher the number, the better the quality.

What does L90 mean?

Median Useful Life L90, for example, is understood as that the length of time during which 50% (B50) of a particular group of products have their light output dropped to less than 90% of their initial luminous flux.

What is the difference between N 80 and L 80 tubing?

The N80 grade is normally less expensive than L80 grades. L80—A restricted yield-tubing grade that is available in Type 1, 9 Cr, or 13 Cr. Type 1 is less expensive than 9 Cr and 13 Cr but more subject to weight-loss corrosion. L80 Type 1 is used commonly in many oil and gas fields because of higher strength than J55.

What does L70 mean?

L70 refers to the point in time when an LED is producing 70 percent of its initial light output. For example, if an LED light fixture produces 10,000 lumens when it is new at some point it will fade to 7,000 lumens. This point in time is referred to as L70.

What is L70 B50?

L70 B50 – at the specified hours (50,000 for example) this test shows 50% of the light sources with more than 70% light output while the remaining 50% have less than 70% of their output.

What does L90 B10 mean?

So LB value indicate the real lifetime at a certain hours. Like L90B10 at 50,000 hours means the LED lamp keeping 90% lumen from initial lumen and only 10% light failed to reach 90% lumen. You can get clearly L70B50 means only 50% lamp survive at 70% lumen remaining at 50,000 hours.

What are the different grades of L80 pipe?

GRADE L80 API 5CT LINE PIPES DISTRIBUTOR, API 5CT CASING PIPE, API 5CT GR. L80 SEAMLESS LINE PIPE, COLD ROLLED CARBON STEEL API 5CT PIPE AND TUBE MANUFACTURER & EXPORTER IN INDIA. » API 5CT GR. L80 Line Pipe Mechanical Properties » Other Types of API 5CT GR. L80 Carbon Steel Pipes

What is L80 steel?

This is a controlled yield strength material with a hardness testing requirement. L80 is usually used in wells with sour (hydrogen sulfide) environments.

What is an L80 casing?

This is a controlled yield strength material with a hardness testing requirement. L80 is usually used in wells with sour (hydrogen sulfide) environments. Available in casing dimensions of 114.3 mm (4.5″) to 406.4 mm (16″)

What is API 5CT grade L80 carbon steel tubes?

API 5CT GR. L80 Carbon Steel Pipes has commercial faucets with a unique technology and exceptional performance to meet every budget. These API 5CT GradeL80 Carbon Steel Tubes are available with customized solutions as per the drawings and designs given by clients. Additionally, offered API 5CT GR.