What's the difference between pressed and forged fittings?

JoeNTMY said:

A power cage is for weightlifting. I'm looking to make one similar to this:

Goto Gongde to know more.

Click to expand...

A trip to argos might be better for you mate...

---------- Post added at 10:04 PM ---------- Previous post was at 10:01 PM ----------

aom said:

Never heard of any sites banning any fitting Longun, any examples?

Want more information on Scaffolding Drop Forged Coupler? Feel free to contact us.

Click to expand...

big tower block for the mod.. no pressed forged as they did not like them
have had it on some station jobs as well.. mostly the big boys who can wave their safey wand.

I suppose they don't like "nippers".. you can do a sticky up hand tight and it wont slip, where as a forged double needs a good spin.

A trip to argos might be better for you mate...big tower block for the mod.. no pressed forged as they did not like themhave had it on some station jobs as well.. mostly the big boys who can wave their safey wand.I suppose they don't like "nippers".. you can do a sticky up hand tight and it wont slip, where as a forged double needs a good spin.

outward bound said:

hi -

check fittings have always been classed as being able to double slippage on load bearing fittings i.e 12.2 kN when used with class A DOUBLES.

in the bs and EN74 it sets out the testing limits but I have not seen info in there on check fittings ...

if this is the case the should this information come from the manufacturer of the double?

cheers OW

Click to expand...

Do you mean Check Couplers or Supplementary Couplers??
Checks are what you place top & Bottom of a hanger as a failsafe coupler. (added security not capacity)
Supplementary couplers are the additional ones used when you have exceeded the allowable load on a coupler. (added capacity)

Many years ago SGB did a test on banked, Band & Plates but I don't know of any tests for doubles in the supplementary formation.
That said if a coupler had a slip value and you use two instead of one then it was always safe to multiply the load capacity by two. Etc etc.

This seemed to change in TG20, when they fell into the 'I don't know the answer' category and used the old fall back of 'obtain the information from the manufacturer' get out clause.

However they go further by stating EN-1 Annex C table C! IMPLIES that a combined slip resistance of two class AA right angle couplers should be assumed as 1.5 x the slip resistance of a single coupler. And 1.67 for Class BB couplers.

This also indicates to me that they go no further than the addition of a single supplementary coupler!!
Christ know what they would do with my designs from the 80's with banks of 4, 5 and 6 additional couplers????????

See section 5.9 TG20:13 for more information.

Regards
Alan

Do you mean Check Couplers or Supplementary Couplers??Checks are what you place top & Bottom of a hanger as a failsafe coupler. (added security not capacity)Supplementary couplers are the additional ones used when you have exceeded the allowable load on a coupler. (added capacity)Many years ago SGB did a test on banked, Band & Plates but I don't know of any tests for doubles in the supplementary formation.That said if a coupler had a slip value and you use two instead of one then it was always safe to multiply the load capacity by two. Etc etc.This seemed to change in TG20, when they fell into the 'I don't know the answer' category and used the old fall back of 'obtain the information from the manufacturer' get out clause.However they go further by stating EN-1 Annex C table C! IMPLIES that a combined slip resistance of two class AA right angle couplers should be assumed as 1.5 x the slip resistance of a single coupler. And 1.67 for Class BB couplers.This also indicates to me that they go no further than the addition of a single supplementary coupler!!Christ know what they would do with my designs from the 80's with banks of 4, 5 and 6 additional couplers????????See section 5.9 TG20:13 for more information.RegardsAlan

Are you interested in learning more about Scaffolding Pressed limpet Coupler? Contact us today to secure an expert consultation!