Aluminium Extrusion Profile Supply: 15 to 45 Series Kits, 8 mm Slot

OEM / ODM Available Free Sample Available Mill certificate to EN 10204 3.1, RoHS and REACH declarations, anodising film report

Aluminium extrusion profile supply for Ahmedabad in 6063-T5: electrical cabinet frames with a designed earth path, solar mounting rails, and frame kits cut to a cut list with connectors and fasteners.

Wholesale Price Quoted against series, finish, kit content and quantity per per metre, per piece or per kit

Material	Aluminium
Alloy Grade	6063-T5
Temper	T5
Section Size	15 to 45 series strut profiles
Slot	6.2 mm (15 and 20 series), 8.2 mm (30 and 40 series), 10.2 mm (45 series)
Length	Saw cut to length, +/-0.5 mm, square or mitred
Tolerance	EN 755-9, wall +/-0.15 mm
Surface	Mill finish / clear anodised / black anodised / powder coated
MOQ	Made to order; frame kits from a repeat quantity
Lead Time	3 to 4 weeks to a Gujarat port plus inland haulage and clearance
Loading Port	Shenzhen, Shanghai, Ningbo
Supply Ability	In-house extrusion, saw cutting, anodising, kitting and export packing
Payment Terms	T/T 30 per cent deposit, balance against copy of bill of lading; L/C at sight on request
Trade Terms	FOB, CIF, CFR, DDP on request
Certifications	Mill certificate to EN 10204 3.1, RoHS and REACH declarations, anodising film report

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A 50 x 100 mm section for a heavy panel or rail. For an electrical frame the earth path and the fixings decide the specification.

01Extrusion profiles for Ahmedabad industry

Ahmedabad sits in the middle of the Gujarat industrial corridor, and two product families dominate the aluminium extrusion demand there: electrical enclosures and switchgear frames, and solar mounting structures. Both are exported and both have an engineering question that a generic profile quotation ignores.

For an electrical frame it is the earth path. For a solar structure it is wind load and the aluminium-to-steel joint. This page covers both, then the case for buying a frame kit rather than loose profiles.

Does an anodised aluminium frame conduct to earth?

No, not through the anodised face. Aluminium oxide is a good insulator, and a 10 to 20 micron anodised film will not pass a bonding continuity test. The frame is still a perfectly good earth conductor underneath the film. The fix is to mask a small bonding pad before anodising, or to grind a patch back to bare metal at assembly and protect it with a corrosion inhibiting compound.

Can I bolt an aluminium solar rail directly to a galvanised steel purlin?

You can, but you must manage the bimetallic couple. Aluminium is anodic to galvanised steel, so in the presence of moisture and road salt the aluminium is the part that corrodes. Use a stainless bolt with a plastic or neoprene isolator washer, or an aluminium-to-aluminium adapter, and never let bare aluminium sit wet against bare steel.

A 50 x 100 section for heavy panel or rail work. The slot width decides the bolt, and the slot edge is what the earthing washer must bite through.

02Series, slot and bolt for Ahmedabad panel work

Series	Slot	Bolts	Typical use	Panel weight it suits
15 series	6.2 mm	M5, M6	small terminal boxes, DIN rail frames	light
20 series	6.2 mm	M5, M6	control cabinets, instrument frames	up to 50 kg
30 series	8.2 mm	M6, M8	distribution panels, medium racks	up to about 120 kg
40 series	8.2 mm	M6, M8	large panels, inverter and VFD enclosures	up to about 250 kg
45 series	10.2 mm	M10 and up	heavy switchgear, busbar supports	300 kg and up

For an electrical frame the section choice is usually set by the panel weight and the door, not by the fault current. The frame holds the enclosure together; the earth path is a separate design decision, covered next.

03Earth continuity on an anodised frame

Panel builders get caught by this every year. The frame is mechanically perfect, the bonding test fails, and the cause is a 15 micron oxide film that everyone forgot.

Method	How it works	When to use	Note
Masked bonding pad	the anodiser masks a small area before the film	series production, repeatable	best method, plan it before anodising
Ground back at assembly	grind a patch to bare metal and protect it	one-off and retrofit	must be treated against corrosion afterwards
Dedicated earth bolt	a bolt through the frame to a star washer	any frame, no masking needed	the star washer bites through the film
Serrated washer through the film	washer teeth pierce the oxide	light duty bonding	test it; not all films pierce cleanly
Bare mill finish frame	no film, conducts everywhere	indoor, dry, painted after	the frame then needs painting for corrosion

Plan the earth path before anodising. Masking a pad costs almost nothing at that stage and cannot be undone later. If the frames are already anodised, a dedicated earth bolt with a serrated washer is the practical fix.

04Solar mounting: wind load and the bimetallic joint

A solar mounting rail is a structural element, and it is loaded by wind, not by weight. Two checks matter before the section is chosen.

Wind load: the design wind pressure acts on the panel area and is carried into the rail as a bending moment between fixings. The rail span between supports, not the panel size, sets the section. A longer span needs a deeper rail.
Uplift: a corner panel can be in suction, which reverses the load on the fixing. A clamp that only resists downward load is not enough.
Bimetallic couple: an aluminium rail on a galvanised or painted steel purlin is a couple of two different metals. Isolate it.
Thermal movement: an aluminium rail expands about twice as much as a steel structure per degree, so long runs need slotted fixings.

Rail section	Typical support span	Suits	Note
40 x 40 mm strut	up to about 1.0 m	small arrays, lightweight panels	check the uplift clamp
50 x 50 mm strut	up to about 1.5 m	rooftop arrays	common choice
50 x 100 mm strut	up to about 2.5 m	ground mount and large spans	deeper rail, lower deflection
100 x 100 mm strut	3 m and up	utility scale, heavy snow	end fixings become the limit

The figures above are indicative and are set by the local wind speed, the terrain category and the panel area. A mounting designer should confirm the rail for the actual site; what we supply is the section and a straightness that holds the span.

05Frame kits: profiles, connectors and a cut list

Ahmedabad fabricators often buy the same ten sections over and over for panel and rack frames. A frame kit turns that into one line on the purchase order: the profiles cut to the cut list, the connectors bagged by frame, and the fasteners counted.

In a frame kit	What is included	Why it helps
Profiles	cut to the cut list, ends deburred	no cutting, no scrap
Connectors	corner brackets, T-nuts, gussets	no separate sourcing
Fasteners	bolts and washers counted per frame	no shortfall on site
Documentation	assembly drawing and a parts list	one frame, one bag
Packing	one carton or bundle per frame	faster kitting on the line

A kit is worth it once a fabricator builds the same frame more than about twenty times. Below that, the kit preparation cost is not recovered, and loose profiles are the better buy.

06Section choice, panel versus solar

Electrical panel frame

The load is static panel weight
Earthing continuity has to be designed in
The frame is indoors, in a control room or a substation
The finish is chosen for appearance and insulation
Series and slot follow the bolt and the panel size

Solar mounting structure

The load is wind, including uplift
The joint is to a different metal, usually steel
The structure is outdoors, wet and often coastal
The finish is chosen for weathering and UV
Span between supports sets the section depth

07Failure modes on Ahmedabad electrical and solar work

What goes wrong	Why it happens	Design it out by
Bonding continuity test fails	anodised film insulates the whole frame	mask a bonding pad, or use a dedicated earth bolt with a star washer
Solar rail corrodes at the purlin	aluminium in contact with galvanised steel, wet	isolate with a washer, or use an aluminium adapter
Panel door will not close square	frame cut error accumulated around the loop	hold the cut to +/-0.5 mm and check the diagonal
Rail deflects under wind load	span chosen on panel size, not on the section	shorten the support span or deepen the section
Long rail buckles in the heat	thermal movement restrained by rigid fixings	use slotted fixings on long runs
Frame arrives scuffed and stained	bare bundles in sea freight	specify interleaving and strapping on anodised work

08What to check before you order for Ahmedabad

Procurement checklist for an Ahmedabad order

Confirm the series and section for the panel or rail.
Confirm the slot width and therefore the bolt size.
Confirm the earth path: bonding pad masked, or a dedicated earth bolt.
Confirm the finish and the anodising film in micron.
Confirm the cut list, and whether you want a frame kit.
Confirm the wind load basis for a solar rail, from the mounting designer.
Confirm the port or inland route, and the trade term.
Confirm the documents: mill certificate, dimensional report, film report.

09Questions Ahmedabad buyers ask

Do you supply aluminium extrusion to Ahmedabad?

Yes, in 6063-T5 and 6061-T6, to Ahmedabad and the surrounding industrial belt, through Mundra or Pipavav.

How do I bond an anodised frame to earth?

Mask a bonding pad before anodising, or grind a patch back to bare metal and protect it. A dedicated earth bolt with a serrated washer also works.

What slot and bolt does each series take?

15 and 20 series use a 6.2 mm slot with M5 and M6; 30 and 40 series use 8.2 mm with M6 and M8; 45 series uses 10.2 mm with M10 and up.

Can I fix aluminium solar rail to a steel purlin?

Yes, but isolate the joint. Use a stainless bolt with an isolating washer and never leave bare aluminium wet against bare steel.

Do you supply complete frame kits?

Yes: profiles cut to the cut list, connectors and fasteners bagged per frame, with an assembly drawing.

What is the lead time to Ahmedabad?

About three to four weeks to a Gujarat port, plus inland haulage and clearance.

What we need to quote an Ahmedabad order

The section list, series and alloy.
The slot and bolt sizes.
The earth path if the frame is electrical.
The finish and the anodising film in micron.
The cut list, and whether a frame kit is wanted.
The wind load basis if the part is a solar rail.
The quantity, the port and the trade term.

Send those seven items and the quotation comes back with the material, cutting, anodising, connectors, packing and freight broken out separately. Browse the full aluminium profile catalogue and the connecting elements range.

Building panel frames or solar rails in Ahmedabad?

Send the section list, the earth path and the cut list. We will quote material, cutting, anodising and connectors as separate lines, or as a frame kit.

Request a quotation