Recently, a number of airlines, domestic routes, fuel surcharges have been lowered again. This time, the number of medium-and-short-haul flights has been reduced. The fuel cost of the 800km-lower segment has been reduced from the previous 60 yuan to 50 yuan, which means that it is from Fuzhou. Shanghai, Guangzhou, Shenzhen, Nanjing and other places will spend 10 yuan less fuel surcharge.
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
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According to the latest domestic airline fuel surcharge collection standards, the domestic segments (including the domestic section of international routes), and the following segments of 800 km (including) are lowered by 10 yuan, each passenger is charged 50 yuan, and the segments above 800 km remain unchanged. Each passenger is charged 110 yuan; the baby is exempt from fuel surcharges. Revolutionary disabled soldiers, disabled policemen and children (including children without accompanying adults), passenger transportation fuel surcharges on domestic routes shall be halved and the number of individuals with less than 10 yuan shall be calculated according to the number of rounds: 800 km (Including) Each passenger in the following segment will receive RMB 20, and each passenger in the segment of 800 km or above will receive RMB 50.
Lower fuel costs for medium and short-haul routes