• Jul , 29 2021

The main materials for marine propellers and the differences Article By Robin Zhang The propeller is used as a powerful force-receiving component for propulsion. The internal strength requirements are also high, and there should be no tracheotomy or air bubbles. Therefore, the blades of large propellers cannot generally be formed by forging. At present, high precision casting is the main meth...

• Dec , 14 2020

Why the stainless steel ball of the seacock corroded again and again? Have you ever feel helpless when some of the boat parts corroded faster than ever before ? Even you could not figure out what is exactly happened to your loved boat at last, the stainless steel parts, ball valves and the other parts which can be saw or not are corroded and replaced from time to time, but there is none of the sol...

• Nov , 30 2020

Something about Boat Sacrificial Anodes Corrosion is one of the greatest enemies of the ship and its machinery. It is also the toughest enemy to fight against, for the people working on the ship. Iron is one substance which is used in abundance on the ship. From the main body of the ship to the smallest equipment used in operations, iron makes its presence felt in almost every type of equipment us...

• Oct , 28 2020

What is the difference between NPT, BSPP and BSPT Thread? What is the difference between BSPP, BSPT and NPT? Have you eve confused on these questions? Searching all these information from internet? As i am engaged in the marine hardware, there will always some questions from my clients: what is the difference between BSPP,BSPT? There are some easy definition on them. Pressure systems in the proces...

• Sep , 09 2020

Thru-hulls: Preparing Your Boat For Spring Do a quick internet search and you’ll find endless spring boat preparation checklists. Responsible boaters realize how important it is to ensure their boat is safe and ready to use for the season. Why then did Boat U.S. find that 34% of boat sinkings are caused by wear, tear or corrosion of a part below the waterline? What are boaters overlooking or skipp...

• Aug , 25 2020

Seacocks are present to shut off the flow of water from or to items of plumbing aboard the vessel. There are three types of marine bronze seacocks: ① the gate valve type, which is like the domestic plumbing type with a red wheel, which is turned clockwise to close; ② the ball valve type, which is preferred by many and has a lever to operate a chrome-plated bronze ball; ③ and th...

• Aug , 25 2020

CARING FOR MARINE SEACOCK VALVE Considering the excitement a failed seacock can generate, the lack of attention they typically receive is almost criminal. Tucked away in the dim recesses of your bilge, seacocks typically don’t get a second thought with regards to preventative maintenance or inspections – until they fail to operate or even break off in your hand during operation (it happens, I’ve s...

• Jun , 23 2020

【Technical Blog】Process flow of marine propeller A perfect marine propeller will be finished as the following steps: ① Molding ② Casting metal ③ Blank processing ④ Finished product inspection ⑤ Installation and use Molding The pitch plate is used to scrape the spiral surface when making the lower sand mold, and its accuracy directly affects the manufacturing quality of the...

• May , 05 2020

Specification of Brass Symbol Working temp Chemical composition (%) Tensile strength(kg/mm2) Elongati rate(%) Hardnes (Brinell) Cu Zn Pb Sn Al Fe YBsC1 1120 83.0~88.0 11.0~17.0 0.5~ Sn + Al + Fe 1.0 15~ 25~ 45~55 YBsC2 1000 65.0~70.0 24.0~34.0 0.5~3.0 ~1.0 ~0.5 ~0.8 20~ 20~ 44~60 YBsC3 1000 58.0~64.0 30.0~41.0 0.5~3.0 ~1.0 ~0.5 ~0.8 55~ 15~ 120~ Specification of High Tensile Strength Brass Symbol ...

• Apr , 29 2020

Never forget: the lowly seacock is all that stands between the sea and your boat Clearly, with any device that penetrates the hull of a yacht, the choice of materials, design and method of installation is paramount to the safety and integrity of the vessel. Plenty of boats have been lost due to corroded through-hulls and seacocks, either through electrolytic breakdown of the material itself or by ...