i think need to quote back what i said coz still many professional welders here, hu...hu...

erm, if not mistaken, prtn already used one piece door stamping gen2, tailor welded blanks door saga,exora, and preve i think, door sash + doorpanel, using double spot, robotic plasma welding, new n latest for prtn, better weight, better design for sash n better strength.

I thinkla :-), dengor2 khabar anginla, ingress corp supply the door to prtn preve. So, better ask them lah, ha...ha...

The door sash is made using roll forming method, only using this method, u can used advance high strength steel(ahss) aka ultra high tensile steel(uhss) as the material coz in cold forming method, its really hard to shape ahss to complex shape coz of its rigidity.

Then the door structure is normally used high strength steel low alloy(hsla), and the trapezoidal impact beam, unique to proton n lotus, start in satria neo n upward(not tabular impact beam as some others using) inside the door also ahss using roll forming.

So, combining the door sash n door panel is using robotic(not human, unless humanoid :-)) plasma welding, double spot, for strength n better corrosion resistant. Ops, forget to mentioned, all high strength steel using in car are galvanised steel(corrosion resistant coating steel), yup, the whole body n panel, deep into pool, electro charged, the pool is in tanjung malim, maybe u can visit for swimming n diving training :-). Plus, its painted in white(thats why they called it body in white as the preve chasis during power of one event), then another layers of colors paint.

So, in other words, using this method, the door will enhance its strength by combining two type of steels(ahss for door sash n hsla for door structure), n door sash is stronger than before as in using tailor welded blanks. Coz previously, only being protected by ahss impact beam inside the door, but door sash still not as strong as ahss(trip or dp), but now, the whole door has the same strength. Yup, i think better they (prtn)conceal with rubber or plastics next time, so that people will not do their own professional analysis coz they only familiar with house grill welding, not robotic plasma welding.

I think better those who curious just google for image using plasma welding, spot, how is it look like, the marks from plasma welding.

the mark of the spot is known as plasma spot braze.

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Added on April 19, 2012, 1:49 pmthe mark of the spot is known as plasma spot braze.

This post has been edited by mat79: Apr 19 2012, 01:49 PM

to be ignorance is ok coz its consider as ill inform or layman, but too ignorance sometimes can lead to brainless thought.

Check civic 1.8 price in thai n compare with exora h-line price in thai which is nearly same as preve. So, which cheaper, which expensive.

haishhh, still people dont understand how tax sytems work. Under afta, any asean car is subjected to excise duty aka local taxes regardless local made, locally assemble or even cbu using atleast 40% of local components(local components means asean made components).

Under customs act, for excise duty, they used 2 diff terms, but same rate, that is import excise duty, n local excise duty. U need to download n read on excise duty under customs act n under the documentation, it shows how to calculate tax on import product n tax for local product.

Prtn is local product, so, under customs acts, it deems to excise duty even selling at malaysian free trade area coz it is not an import product. It is local. U shud read also under free trade area under customs act.

If other cars being imposed exice duty not as local means malaysia is not abide to afta rules n its been rule out since 2009, malaysia already following afta rules means any asean made has the same tax brackets as local one, meaning no tax barrier. N malaysia has been prnalised by thais because not abide to afta by thais gov, n people think that malaysia g has to pay money for it, but it is not. Actually the punishment is that prtn being tax 20% more on local tax in thai compare to toyota, honda n etc that is asean made.

Lazy to give link coz so many times people being giving out links n people still being ignorance. The table in maa is just tables to simplify things. If want to know more, read on customs act which available in customs website.