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Hi guys, For LNG project, 304/304L welded pipe need comply with the Sour service of NACE MR0175 / ISO 15156-3. In my opinion, generally the hardness test is required for stainless steel pipe in sour service, but the client ask us to provide the PREN and Ni+2Mo in the MTC which is a guidance...

Marking shall be as per standard and client requirement.

Hi, I'm from a steel pipe manufacturer in China. And for Clause 3.2 in ASMT A999, I am confused in understanding, the description as below: 3.2 If secondary melting, such as electroslag remelting or vacuum remelting, is used, the heat shall be defined as all of the ingots remelted from a...

Dear EdStainless, Dilution is inevitable. How to understand this sentence specified in Section 11 Product Analysis of ASTM A358. "analysis shall be made by the manufacturer from the finished pipe of the plate and of the weld deposit." And Section 11 requires that "The results of these...

Dear EdStainless Thanks your reply, AWS A5.14 (N06625) for S31254 welded pipe

Dear All, I am confused the description about the Product Analysis in ASTM A358, the snapshot is below: analysis shall be made by the manufacturer from the finished pipe of the plate and of the weld deposit. Regarding this description, if only need to check the composition of the base...

Dear All, I'am confused about the Out-of-Roundness description in ASTM A358. My understanding is following: Out-of-Roundness (ODmax - OD min) ≤ OD*1%, for instance, pipe norminal OD is 168mm, and after measuring, the ODmax is 168.8mm and ODmin is 167.9mm, so the out-of...

In my opinion, this is dual grade. I have a question. As per ASME SA-312, TP316 seamless needs 11% nickel content,if client didnot specify 316/316L is a dual grade, can we select the 316L to substitute 316/316L?

Dear, Could you have any refernece for ASME stainless steel pipes about minimum thickness requirement for impact test. One EPC asked us to do the impact test for 304L welded pipes with size 219*3.76 and 323*4.57. I check the specification of Shell, Total and DNV, Norsok M630, it specified...

Hello, guys, I have a question for small diameter for stainless steel welded pipe for double side welded with filler metal. Many EPCs specify the ASTM A358 CL1 for stainless steel welded pipes in design for all size. For small size, such as OD 6" and below, is there any welding machines which...

1.4436 similar to TP316H, 1.4401 similar to TP316

Stabilisation heat treatment is required for TP347 to strengthen it's corrosion resistance.

I think this is acceptable, different machine and different method also can make the difference.