Sawyer Mfg. Co. · SKU 400-SSSpider Clamp
The toolSee any photo full size

Internal alignment,
nothing in the way.

Dual expanding clamps working from inside the pipe, so you get a full 360 degrees of weld access with no external obstructions. Stainless throughout, five sizes from 2 inch to 36 inch.

Dual expanding clamps give precise internal alignment
Full 360 degree weld access with no external obstructions
Stainless steel construction for durability and corrosion resistance
  1. How it runs
  2. 1Into the bore
  3. 2Both sides, independently
  4. 3All the way round
30-day returns
Sawyer Mfg. Co.
Shipping at checkout

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In practice

How it runs
on the job

Insert

Into the bore

It works from inside, which is why nothing blocks the weld.

Expand

Both sides, independently

Differing pipe diameters get their own adjustment.

Weld

All the way round

No external obstruction means no stopping to move a clamp.

360degrees of weld access
36inch largest size
The comparison

Next to
the usual answer

What matters

Spider Clamp

The usual answer
Position
Inside the pipe
Outside
Weld access
Full 360 degrees
Interrupted
Differing diameters
Independent adjustment
One setting
Material
Stainless
Carbon steel
Who buys it

Where it earns
its keep

Stainless fabrication

Stainless clamp, stainless pipe, no cross-contamination.

Full penetration work

Nothing outside the pipe means nothing to weld around.

Questions people actually ask

Does anything sit outside the pipe?

No. That is the point of it: full 360 degree weld access with no external obstructions.

What if the two pipes are slightly different diameters?

The two clamps adjust independently.

What sizes are there?

Five, covering 2 inch to 36 inch.

Clamp inside.
Weld all the way round.

Spider Clamp, SKU 400-SS.

Add to cart

30-day returns, unused and in the original packaging.