11 Years Factory wholesale Shower Head QH-023 Factory in Pretoria
With a positive and progressive attitude to customer's interest, our company continuously improves our product quality to meet the needs of customers and further focuses on safety, reliability, environmental requirements, and innovation of
11 Years Factory wholesale Shower Head QH-023 Factory in Pretoria, With a wide range, good quality, reasonable prices and good service, we will be your best business partner. We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
We have brought the SuperCircuit Steel Braided Brake Lines to the race track, to make sure the USA engineered steel braided brake lines perform accordingly under the toughest environment and conditions.
SuperCircuit Steel Braided Brake Lines are compliant to Society of Automotive Engineers, International (SAE J1401) and DOT Standard Federal Motor Vehicle Safety Standard (FMVSS106) and every hose is tested to 3000 p.s.i.
Air Tank Material Selection
There are two general modes of failure in mechanical components: “brittle” or “ductile” fracture.
“Ductile” fracture occurs when the material stretches (yields) like taffy before breaking apart.
“Brittle” fracture occurs when a crack propagates through the material “ripping” the component into pieces before much stretching occurs.
Materials will yield (stretch) unless they have the necessary conditions to crack. The “Fracture Toughness” of a material as well as the size, shape and location of any cracks or other stress concentrators determine if a material will crack under a given loading condition. What makes this difficult is knowing the information about the cracks in the material, an impossible task without expensive equipment like x-ray units and the fact that cracks may grow over the service life of the component due to cyclic stresses or creep.
Pressure vessels can contain huge amounts of energy in the from of compressed gas. If a tank were to break due to brittle fracture shock-waves through the material may cause the tank to explode into hundreds of pieces which would travel at incredible speed causing damage to the equipment or personnel in the area.
There are two methods used for making safe pressure vessels: Yield Before Break, and Leak Before Break.
The yield before break design method ensures that the pressure tank will yield (stretch) before breaking apart. This means you must insure that there is no yielding by measuring or observing the tank. For example, when a 2-liter bottle is over-pressurized it is easily apparent as the bottle expands significantly (before it explodes due to brittle fracture).
The leak before break design method ensures that even a crack as large as the thickness of the wall of the pressure vessel will still not allow the material to fracture. This means the pressure vessel will leak before the tank breaks due to brittle fracture, lowering the internal pressure and avoiding further propagation of the crack.
So far, the PVC pipe survived all but the 12 foot freezer temp drop. What does this mean? Hard to say anything conclusively, but the pipe is stronger than I expected – but looks to get dramatically less safe at lower temperatures. More testing is required!