Why You Should Use 316 Stainless Steel Rods

 The difference between 304 and 316 stainless steel is very commonly misunderstood, or not known at all, and can have a huge impact on the reliability of survey results, and what you’re achieving for your clients. Let’s explore this further.

304 stainless steel contains a mix of chromium and nickel and is slightly responsive to magnetic fields. The addition of the nickel (8-10.5%) modifies the physical structure of the steel and then, theoretically, makes it non-magnetic. However, through extended periods of continuous motion in one direction, and the resulting friction, grade 304 stainless steel can become slightly more magnetic.

Additionally, if the steel alloy is mechanically deformed during the manufacturing process the internal structure of the steel may change causing the rods to be partly magnetic from the moment they leave your supplier’s warehouse. They haven’t even seen pay dirt yet.

On the other hand, 316 type stainless steel is a molybdenum-alloyed steel and contains a higher concentration of nickel than 304 does, approximately 10-14%. The result is the 316 type is negligibly responsive to magnetic fields, making it perfect for applications where non-magnetic metal is required.

Why You Should Use 316 Stainless Steel Rods

Thanks to the higher concentration of nickel in 316 type drill rods, these are significantly more resistant to becoming magnetised by continuous friction and therefore less likely to negatively impact your client’s data.

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What Is Welding Neck Flange

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Welding Neck Flanges  are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces. These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection. This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
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