"Whats A-36?"
A36 is a material specification for mild steel, there are many grades of materials, A36 is one that means the formulation of this steel meets or exceeds the requirements for the A36 specification.
"Whats 4.13?"
This is a picture or drawing in the D1.1 structural welding code book that explains what a side bend specimen is and gives dimensions for the sample depending on several things.
"Then second page where it says Visual inspection (4.8.1)?"
This is a paragraph out of the code book that gives the Visual Acceptance Criteria for the Welding Procedure.
"Guided bend test result (4.30.5)?"
This refrences paragraph 4.8.3.3 for the Visual Acceptance Criteria for the Welder.
"Fillet weld test result (4.30.2.3,4.30.4.1)??"
If you had taken a fillet weld test, the results would be written here.
"I thought 3g ment pipe? and f3 is plate?"
The 3G means you took a Vertical Groove plate test with a upward progression, the 3F would be relevant if you had taken a Vertical Fillet weld test with an upward progression.
There are two types of welds [speaking in very general terms here]
Fillet welds and Groove welds, although there are many configurations of groove welds.
Hope this helps, don't hesitate to ask more questions if you are still confused.
John Wright